Live tips to save cory eggs

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bekateen
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Re: Live tips to save cory eggs

Post by bekateen »

My closing observations on the trilineatus eggs: This morning, five eggs remain unhatched but appear viable. Fifty two fry are in the container; four of these are dead.

Okay, one more trial, just for fun. This time, fresh oil cat eggs (68 of them) which were laid overnight. The setup is exactly the same as last time - 1 cm deep water, no active aeration or circulation, the container floating on the water surface in parents' aquarium, daily ~75% water changes taken from parent tank, with three medium sized Ramshorn snails. Let's see how this ends. ;-)

To clarify the photos, the plants you see in the photos are not IN the egg container, they are in the main aquarium, UNDER the egg container.

Cheers, Eric
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Re: Live tips to save cory eggs

Post by pleconut »

Congratulations on another spawning! Hoping the snail and egg combination works well here also. I'm hoping my ABNs will also do so soon, it's looking imminent, but then it has been for some time now.
Thanks Teresa
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Re: Live tips to save cory eggs

Post by bekateen »

Alas, this test with the oil cat eggs is already a failure. Within an hour of moving the eggs to the container, the eggs started lysing (bursting open); I actually saw one burst with my own eyes. :((

This type of response, in my mind, makes me suspect that there was an osmotic problem with the eggs in the water. However I can't see how this could be the case, since the egg container water was taken out of the same tank in which the eggs were laid. The other possibility I can imagine is that these eggs were so fresh that they were extremely fragile and hadn't hardened up yet (which I know happens to cory eggs, but I don't know if this also occurs to oil cat eggs). Maybe I should have left these eggs with their mom in her cave for another day before transferring them to the incubation container.

Within a few minutes of this picture being taken, the number of apparently "intact" eggs had dropped from the 68 of my original count to less than 20! And in case anyone is wondering, I saw no evidence that the snails had anything to do with the eggs bursting. The one egg I saw burst was nowhere close to any of the three ramshorn snails.

Dang!
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Re: Live tips to save cory eggs

Post by pleconut »

Not sure if there's a time after which the eggs harden, as I've no experience with centromochlus perugiae whatsoever to know. Could the large diference in water volume ie the tank and container been a factor, and do either of the parents care for the eggs in anyway, I might seem a bit naive, but just some thoughts.
Thanks Teresa
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Re: Live tips to save cory eggs

Post by bekateen »

Water volume shouldn't matter, but a change in the relative water tonicity would matter. Tonicity = a relative measure of the water diffusion force created between two water solutions separated by a membrane - in this case, the water in the container compared to the water inside the eggs; when there is an imbalance in the tonicities between two solutions, water will spontaneously move across the membrane, either INTO the cells causing the cells to swell and lyse (as seen in my cells) or OUT OF the cell causing the cells to shrivel. Obviously, neither of those actions is good for eggs. Tonicity is imperfectly linked to the relative osmolarities (concentrations of all solutes, salts, proteins, whatever, in the water). Although not universally true, water solutions with more ions and other substances dissolved in them (i.e., higher TDS) will be hypertonic compared to water solutions with fewer solutes (i.e., lower TDS), and these higher TDS solutions will leach water out of the lower TDS solutions.

Since the eggs were laid in the tank last night, the eggs were deposited into a certain quality of water with a particular TDS (which I didn't get a chance to measure this morning). I took water out of that tank to fill the egg container, so the osmolarity should be identical, and thus the relative tonicity should be unchanged - I.e., if the eggs didn't lyse in the aquarium, they shouldn't lyse in the container either.

There is some parental care performed by female oil cats: The eggs are laid on the walls of a cave (like many plecos) and the MOTHER (not the father, as is the case for most plecos) stays with the eggs and guards them. However, I don't know how much active care of the eggs occurs: When I watch my mothers with their eggs, I never see any strong "fanning" activity by the moms; if anything they seem disinterested in the eggs, but they do stay with them. So maybe there is some fanning, but I haven't observed that personally.

Cheers, Eric
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Re: Live tips to save cory eggs

Post by pleconut »

Thank you for the clarification. Hoping you see another spawning very soon.
Thanks Teresa
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Re: Live tips to save cory eggs

Post by MChambers »

Would adding methylene blue change the tonicity?
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Re: Live tips to save cory eggs

Post by bekateen »

MChambers wrote:Would adding methylene blue change the tonicity?
Good question. Anything soluble in water, but which CANNOT penetrate the cell membrane, will change the tonicity. If the methylene blue is able to enter the egg cells, then it will not change the tonicity. If it is trapped outside of the egg cell, then it will change the tonicity.

To be clear, I did not add any methylene blue to my container. If the ramshorn snails are controlling (eating?) the fungus, then no medication should be necessary.

Cheers, Eric
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Re: Live tips to save cory eggs

Post by francoisMtl »

Hi Eric,
Sorry for your loss...
At first I wanted to ask you if you were sure these eggs were fecund. But I saw your post (http://www.planetcatfish.com/forum/view ... =7&t=42368) and that is not their first spawn... Did you notice low fertility in the firsts spawns?

Congratulation for your Corydoras trilineatus, very nice pictures and detail report. :YMAPPLAUSE:
So we can add this species to the list. Here I got success with Corydoras aeneus and right now I have some Corydoras paleatus eggs with ramshorn snails, should be able to report the output in few days.

Ancistrus sp. (Gold) ? francoisMtl Montreal,Qc
francoisMtl Montreal,Qc
francoisMtl Montreal,Qc
syno321 Edmonton Ab (PlanetCatFish)
Corydoras MChambers Washington DC (PlanetCatFish)
syno321 Edmonton Ab (PlanetCatFish)
Corydoras francoisMtl Montreal,Qc
Corydoras MChambers Washington DC (PlanetCatFish)
Corydoras syno321 Edmonton Ab (PlanetCatFish)
MChambers Washington DC (PlanetCatFish)
francoisMtl Montreal,Qc
(venezuelanus black) francoisMtl Montreal,Qc
francoisMtl Montreal,Qc
bekateen Stockton CA (PlanetCatFish)
Fundulopanchax gresensis Takwai francoisMtl Montreal,Qc

Cheers,
Francois
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Re: Live tips to save cory eggs

Post by francoisMtl »

Just thinking of it, would it be safer next time to split eggs in two chambers with or without snails?
I would have love to add your to the list. Those snails may protect more species eggs than just corys, one ancistrus and one killie.
Francois
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Re: Live tips to save cory eggs

Post by bekateen »

Hi Francois,

As for my previous spawns, I've had decent survival (except for my first spawning: they were over a month old when I accidentally unplugged the heater on Thanksgiving, and then forgot to plug it back in; those babies all died overnight), but the egg clutches have not been so large. Each spawn produces more eggs, and I think this spawn at 68 eggs is about my largest.

As for spitting the eggs into two batches, with and without snails, that is would be a good control experiment, but it would help if something about the water caused the cell lysis and the waters are coming from the same source. That said, I've recently been informed that baby perugiae tend to survive very well if just left with mom, so even if ramshorn snails do reduce fungusing, it may be that I'm just better off leaving them with mom.

Cheers, Eric
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Re: Live tips to save cory eggs

Post by francoisMtl »

One more to add to the list: here some Corydoras paleatus eggs have survived treatment with Ramshorn snail and were born healthy! They are now growing up with some C.schultzei black.

Ancistrus sp. (Gold) ? francoisMtl Montreal,Qc
francoisMtl Montreal,Qc
francoisMtl Montreal,Qc
syno321 Edmonton Ab (PlanetCatFish)
Corydoras MChambers Washington DC (PlanetCatFish)
syno321 Edmonton Ab (PlanetCatFish)
Corydoras francoisMtl Montreal,Qc
Corydoras MChambers Washington DC (PlanetCatFish)
Corydoras syno321 Edmonton Ab (PlanetCatFish)
MChambers Washington DC (PlanetCatFish)
francoisMtl Montreal,Qc
francoisMtl Montreal,Qc
(venezuelanus black) francoisMtl Montreal,Qc
francoisMtl Montreal,Qc
bekateen Stockton CA (PlanetCatFish)
Fundulopanchax gresensis Takwai francoisMtl Montreal,Qc

Cheers,
Francois
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Re: Live tips to save cory eggs

Post by bekateen »

Hi Francois,
You're building a nice list of successes!
Cheers, Eric
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Re: Live tips to save cory eggs

Post by francoisMtl »

bekateen wrote:Hi Francois,
You're building a nice list of successes!
Cheers, Eric
Yes Eric, it seems canadian winter is good for them. Last year, CW010 were breeding each three weeks, they then stop at spring and summer time...
I am not the only one to have some success, syno321 just sent me a PM to add weitzmani and c120. The race is on! Which cory is next? Reading your post (What do ambiacus fry look like?), should we add your C.aeneus and C.ambiacus to that list of success?

Ancistrus sp. (Gold) ? francoisMtl Montreal,Qc
francoisMtl Montreal,Qc
francoisMtl Montreal,Qc
syno321 Edmonton Ab (PlanetCatFish)
Corydoras syno321 Edmonton Ab (PM PlanetCatFish)
Corydoras MChambers Washington DC (PlanetCatFish)
syno321 Edmonton Ab (PlanetCatFish)
Corydoras francoisMtl Montreal,Qc
Corydoras MChambers Washington DC (PlanetCatFish)
Corydoras syno321 Edmonton Ab (PlanetCatFish)
MChambers Washington DC (PlanetCatFish)
francoisMtl Montreal,Qc
francoisMtl Montreal,Qc
(venezuelanus black) francoisMtl Montreal,Qc
francoisMtl Montreal,Qc
bekateen Stockton CA (PlanetCatFish)
syno321 Edmonton Ab (PM PlanetCatFish)
Fundulopanchax gresensi "Takwai" francoisMtl Montreal,Qc

Cheers,
Francois
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Re: Live tips to save cory eggs

Post by bekateen »

Hi Francois,

You can add my aeneus (although I see that you already have aeneus on your list), but please wait before you add ambiacus. The color pattern in these fry sure looks like they will be ambiacus, and I don't recall my trilineatus fry looking like this when so young, but I want to give them more time to mature before I definitively settle that they are ambiacus. I'm 95+% confident that they are ambiacus, but I want to make sure that some big black dot doesn't start to develop on the dorsal fin as they age (in which case they are just trilineatus).

With both my current aeneus and these suspect ambiacus juvies, I should let you know that I did not use the same incubation cups as I used in my earlier experiments. Rather, I dumped my most recent eggs directly into my 2.5 gal tank hatchery/fry tank which has a 78F heater and a sponge filter, and into which I've added a group of ramshorn snails. So these eggs did rely on the RH snails to prevent fungusing (with no additional chemical protection (no methylene blue, etc)), even though they weren't raised in the confines of the small bowls with daily water changes. I did notice a few fungused eggs in this larger container (compared to what I saw in the little cups), but the vast majority of the eggs hatched into nice fry.

As I said above, I'm almost 100% confident these are ambiacus. Besides their color pattern (the strong black color of the dorsal fin spine), there are two other items I've noticed which incline me towards this conclusion are that (1) these juvies are growing much more vigorously than my trilineatus have in the past, and (2) these juvies are really easily scared; that is also true of my ambiacus parents, but is not as true of my trilineatus (either my parents or past juvies).

Cheers, Eric
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Re: Live tips to save cory eggs

Post by francoisMtl »

Hi Eric,
This list is for Cory eggs that were protected from fungus through the use of Ramshorn snails. If you are convince those snails did protect eggs, then your cory should be added into that list. Obviously using small containers or cups allow to watch what is happening to each egg almost individually and for sure allow to count eggs before and after incubation time. However, it may not be the only way to get snail protection. Actually I do use aged water but no air line, you used tank water, others may feel more comfortable to add one air line, etc... So already with the use of small containers, protocols can vary. One thing which is constant: in each case so far snails protected eggs from fungus without the use of chemicals.
Yes, Corydoras aeneus is already into the list but this was done away from your place and your aeneus will be independent confirmation of the previous one. I was wondering if I should leave triplicate of CW010, but it shows robustness of this way of doing. So why not adding your ?
We will wait for the that you alleviate the uncertainty of their identification. Although it will be nice if they could be , that way it will be another genera for which Ramshorn snails are protective!
Cheers,
francois
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Re: Live tips to save cory eggs

Post by bekateen »

Hi Francois,
Indeed you are right. Please do add my aeneus to your list. I'll let you know about the other species as I confirm their IDs.

Cheers, Eric
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Re: Live tips to save cory eggs

Post by bekateen »

Hi Francois,

Without a doubt my juveniles are . You can add them to the list. Sadly, no ambiacus fry in the group at all. :-(

Cheers, Eric
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Re: Live tips to save cory eggs

Post by francoisMtl »

bekateen wrote:Hi Francois,
Without a doubt my juveniles are . You can add them to the list. Sadly, no ambiacus fry in the group at all. :-(
Cheers, Eric
Hi Eric,
With your C.aeneus and S.barbatus, this list start to be significant: 20 catfish so far, and the word is spreading outside of catfish eggs protection as Jody from Ottawa got success with his angel fish eggs and is now trying Pundamillia nyererei a mouthbrooder cichlid (I put the link below).

Ancistrus sp. (Gold) ? francoisMtl Montreal,Qc
francoisMtl Montreal,Qc
francoisMtl Montreal,Qc
bekateen Stockton CA (PlanetCatFish)
syno321 Edmonton Ab (PlanetCatFish)
Corydoras syno321 Edmonton Ab (PM PlanetCatFish)
Corydoras MChambers Washington DC (PlanetCatFish)
syno321 Edmonton Ab (PlanetCatFish)
Corydoras francoisMtl Montreal,Qc
Corydoras MChambers Washington DC (PlanetCatFish)
Corydoras syno321 Edmonton Ab (PlanetCatFish)
MChambers Washington DC (PlanetCatFish)
francoisMtl Montreal,Qc
francoisMtl Montreal,Qc
(venezuelanus black) francoisMtl Montreal,Qc
francoisMtl Montreal,Qc
bekateen Stockton CA (PlanetCatFish)
syno321 Edmonton Ab (PM PlanetCatFish)
bekateen Stockton CA (PlanetCatFish)
bekateen Stockton CA (PlanetCatFish)

Non Catfish:
Fundulopanchax gresensi "Takwai" francoisMtl Montreal,Qc
Pterophyllum scalare (angel fish) Jody Ottawa On (OVAS forum)

Cheers,
Francois
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Re: Live tips to save cory eggs

Post by bekateen »

Hello Francois (@francoisMtl),

You can add to your list. ;-) These were incubated like my trilineatus eggs, in a small container of water, ~1-2cm deep, no aeration, floating on surface of parents' tank, with daily pour-dip-and-refill water changes from parents' tank. Incubated for 5.5-6 days with 3-4 Ramshorn snails of different sizes, very small to pretty big. Not all eggs were fertile and not all will hatch. But the Ramshorn snails didn't eat the eggs, and no fungus developed.

Cheers, Eric
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Re: Live tips to save cory eggs

Post by francoisMtl »

Hi Eric,
Number of Corydoras eggs saved with planorbus increase with your and some here in my tanks and cups.! It is almost to easy once we got them to spawn. Who is next?
Cheers,
francois

Catfish:
Loricariidae - Plecos et al

Ancistrus sp. (Gold) ? francoisMtl Montreal,Qc
Callichthyidae - Corys et al
francoisMtl Montreal,Qc
francoisMtl Montreal,Qc
bekateen Stockton CA (PlanetCatFish)
syno321 Edmonton Ab (PlanetCatFish)
Corydoras syno321 Edmonton Ab (PM PlanetCatFish)
Corydoras MChambers Washington DC (PlanetCatFish)
syno321 Edmonton Ab (PlanetCatFish)
Corydoras francoisMtl Montreal,Qc
Corydoras MChambers Washington DC (PlanetCatFish)
Corydoras syno321 Edmonton Ab (PlanetCatFish)
bekateen Stockton CA (PlanetCatFish)
MChambers Washington DC (PlanetCatFish)
francoisMtl Montreal,Qc
francoisMtl Montreal,Qc
(venezuelanus black) francoisMtl Montreal,Qc
francoisMtl Montreal,Qc
bekateen Stockton CA (PlanetCatFish)
francoisMtl Montreal,Qc
syno321 Edmonton Ab (PM PlanetCatFish)
bekateen Stockton CA (PlanetCatFish)

Non Catfish:
Fundulopanchax gresensi "Takwai" francoisMtl Montreal,Qc
Pterophyllum scalare (angel fish) Jody Ottawa On (OVAS forum)
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Re: Live tips to save cory eggs

Post by pleconut »

First thing tomorrow morning I will be transferring my recently laid Adolfi cory eggs (currently in a tumbler with red cherry shrimp -the reason is as the eggs tumble the shrimps catch and clean them. None at all have fungussed. Also I have a planorbus snail cleaning egg fragments at the bottom of the tumbler I don't think several of the retrieved eggs were intact. The eggs will be transferred to the breeder box so that the fry can take the first gulp of air. Also into the breeder box will go eggs, planorbus and Malaysian trumpet snails and the shrimp. Already there's signs of fry development inside the eggs. The breeder box is air supplied contains Indian almond leaves it has a slight residual build up on the mesh sides which I'm hoping will be a food source for the fry.
Thanks Teresa
francoisMtl
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Re: Live tips to save cory eggs

Post by francoisMtl »

Hi Teresa,
When I tested either gammarus, planorbus or a mix of planorbus and cherry shrimp, there was no agitation and those things were able to turn around eggs to clean them all. One drawback with gammarus and shrimp are during my daily water change, they tend to go with old water... I suppose you do not have this problem as your water is constantly renewed in the egg tumbler.
As you can see on pict in previous page, my planorbus do not look exactly the same as your, maybe same gender but different species. Actually, I do not know the exact species name of the one i used.... Maybe try your planorbe once with a limited number of eggs, just to see.
Can you say for sure shrimp or your planorbe protected adolfi cory eggs? If so we will need to add it to the list.
Here some more success with hatched eggs of Fundulopanchax nigerianus "Rayfield", plus some more panda and venezuelanus. The other corys have not yet started to spawn or for those who did already they have stoped.
Cheers,
francois

Catfish:
Loricariidae - Plecos et al

Ancistrus sp. (Gold) ? francoisMtl Montreal,Qc
Callichthyidae - Corys et al
francoisMtl Montreal,Qc
francoisMtl Montreal,Qc
bekateen Stockton CA (PlanetCatFish)
syno321 Edmonton Ab (PlanetCatFish)
Corydoras syno321 Edmonton Ab (PM PlanetCatFish)
Corydoras MChambers Washington DC (PlanetCatFish)
syno321 Edmonton Ab (PlanetCatFish)
Corydoras francoisMtl Montreal,Qc
Corydoras MChambers Washington DC (PlanetCatFish)
Corydoras syno321 Edmonton Ab (PlanetCatFish)
bekateen Stockton CA (PlanetCatFish)
MChambers Washington DC (PlanetCatFish)
francoisMtl Montreal,Qc
francoisMtl Montreal,Qc
(venezuelanus black) francoisMtl Montreal,Qc
francoisMtl Montreal,Qc
bekateen Stockton CA (PlanetCatFish)
francoisMtl Montreal,Qc
syno321 Edmonton Ab (PM PlanetCatFish)
bekateen Stockton CA (PlanetCatFish)

Non Catfish:
Fundulopanchax gresensi "Takwai" francoisMtl Montreal,Qc
Fundulopanchax nigerianus "Rayfield" francoisMtl Montreal,Qc
Pterophyllum scalare (angel fish) Jody Ottawa On (OVAS forum)
pleconut
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Re: Live tips to save cory eggs

Post by pleconut »

Hi Francios. I can definitely say the shrimp keep the eggs free of fungus. Two spawns of around 40 eggs that were collected only one egg was fungussed out of all of them all as they catch and clean the eggs and the movement of the tumbler doesnt allow them to hold the eggs long enough to damage them. I will add though in the first spawn I added 5 large cherry shrimp about 1.5 cms size. 1 planorbus snail while the snail kept tumbler clean the 5 adult shrimp i think damaged some of the eggs as numbers had depleted although the eggs were fertile. So in the second spawn i added three 8mm red cherry shrimp they were just as effective as the larger but a lot more eggs successfully hatched some were infertile as a new female was involved which the shrimp broke down. My conclusion is red cherry shrimp need to be small in size and few in number for a successful yeild. How it will work in a still container i wouldn't know maybe the shrimp will need to be very small so eggs aren't damaged. Have fry I'm raising more challenging obviously. :)
Thanks Teresa
francoisMtl
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Re: Live tips to save cory eggs

Post by francoisMtl »

Some update with @pleconut adolfi cory with shrimps, and cory cw030 from syno321.

Catfish:
Loricariidae - Plecos et al

Ancistrus sp. (Gold) ? francoisMtl Montreal,Qc
Callichthyidae - Corys et al
francoisMtl Montreal,Qc
pleconut Bournemouth UK (planetcatfish) with cherry shrimps.
francoisMtl Montreal,Qc
bekateen Stockton CA (PlanetCatFish)
syno321 Edmonton Ab (PlanetCatFish)
Corydoras syno321 Edmonton Ab (PM PlanetCatFish)
Corydoras MChambers Washington DC (PlanetCatFish)
syno321 Edmonton Ab (PlanetCatFish)
Corydoras francoisMtl Montreal,Qc
Corydoras MChambers Washington DC (PlanetCatFish)
Corydoras syno321 Edmonton Ab (PlanetCatFish)
Corydoras syno321 Edmonton Ab (PM PlanetCatFish)
bekateen Stockton CA (PlanetCatFish)
MChambers Washington DC (PlanetCatFish)
francoisMtl Montreal,Qc
francoisMtl Montreal,Qc
(venezuelanus black) francoisMtl Montreal,Qc
francoisMtl Montreal,Qc
bekateen Stockton CA (PlanetCatFish)
francoisMtl Montreal,Qc
syno321 Edmonton Ab (PM PlanetCatFish)
bekateen Stockton CA (PlanetCatFish)

Non Catfish:
Fundulopanchax gresensi "Takwai" francoisMtl Montreal,Qc
Fundulopanchax nigerianus "Rayfield" francoisMtl Montreal,Qc
Pterophyllum scalare (angel fish) Jody Ottawa On (OVAS forum)
francoisMtl
Posts: 76
Joined: 28 Nov 2015, 06:01
My cats species list: 19 (i:0, k:0)
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Re: Live tips to save cory eggs

Post by francoisMtl »

Some news on few more spawn of Fundulopanchax nigerianus "Rayfield" and one spawn of Corydoras aeneus albinos none of them did get fungus upon incubation with ramshorn snails.
MortenDAD
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Location 2: Slagelse

Re: Live tips to save cory eggs

Post by MortenDAD »

New to this forum; but I've raised several batches of corys using ramshorns and cherry shrimp as cleanup crew, so if the list needs adding to - Panda, Habrosus, Rabauty, Paleatus are go from Denmark.
As is Danio Margaritatus
MChambers
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Re: Live tips to save cory eggs

Post by MChambers »

You can add Corydoras gossei to the list.
francoisMtl
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Re: Live tips to save cory eggs

Post by francoisMtl »

Some news!
I discussed with a cory expert who came to visit Montreal just before CatCon and he told me he was taking away fungused eggs. I got the feeling when I was taking eggs a day after spawning that ratio was not as good as when eggs were collected right away. It was like fungus will start spreading inside the eggs and affect developing embryo.
I tested on Archocentrus centrarchus eggs with or without snails. Eggs without snail start fungusing. After embryo hatched, I added snail in the "no snail container" for two days and took a picture of both no snail and with snails container. Eggs that started to fungus lost their integrity and were completly absorbed by snails whereas snails did not touch eggs that were protected from the beginning.
Images are maybe better:
Archocentrus centrarchus eggs: No snail incubation cup on Oct22
Arccentr0427.JPG
Archocentrus centrarchus eggs: No snail incubation, then snail for two days on Oct24
Arccentr0429.JPG
Archocentrus centrarchus eggs: Snails all the time picture on Oct24 (two days after last fertile eggs hatch
Arccentr0431.JPG
Just for the fun of it, eggs
Cmetae0434.JPG
They were very large eggs and took a week to hatch when other that hatch here so far take 3 to 5 days.
Those cory metae fry hatch very large compare to that fortunatly hatch the same days. C.venezuelanus spawn 3 days after C.metae, pefect for a side by side comparison.
C.metae fryes are marked with an arrow:
CmetaeA443.JPG
Updated list with species eggs protected with snails from MChambers, MortenDAD, and mine:

Catfish:
Loricariidae - Plecos et al

Ancistrus sp. (Gold) ? francoisMtl Montreal,Qc
Callichthyidae - Corys et al
francoisMtl Montreal,Qc
pleconut Bournemouth UK (with cherry shrimps)
francoisMtl Montreal,Qc
bekateen Stockton CA
syno321 Edmonton Ab
Corydoras syno321 Edmonton Ab (PM)
Corydoras MChambers Washington DC
syno321 Edmonton Ab
Corydoras francoisMtl Montreal,Qc
Corydoras MChambers Washington DC
Corydoras syno321 Edmonton Ab
Corydoras syno321 Edmonton Ab (PM)
bekateen Stockton CA
MChambers Washington DC
MChambers Washington DC
MortenDAD Zealand, Denmark (Planorb and cherry shrimps)
francoisMtl Montreal,Qc
francoisMtl Montreal,Qc
MortenDAD Zealand, Denmark (Planorb and cherry shrimps)
francoisMtl Montreal,Qc
MortenDAD Zealand, Denmark (Planorb and cherry shrimps)
MortenDAD Zealand, Denmark (Planorb and cherry shrimps)
(venezuelanus black) francoisMtl Montreal,Qc
francoisMtl Montreal,Qc
bekateen Stockton CA
francoisMtl Montreal,Qc
syno321 Edmonton Ab (PM)
bekateen Stockton CA

Non Catfish:
Archocentrus centrarchus francoisMtl Montreal,Qc
Danio Margaritatus MortenDAD Zealand, Denmark (Planorb and cherry shrimps)
Fundulopanchax gresensi "Takwai" francoisMtl Montreal,Qc
Fundulopanchax nigerianus "Rayfield" francoisMtl Montreal,Qc
Pterophyllum scalare (angel fish) Jody Ottawa On (OVAS forum)
francoisMtl
Posts: 76
Joined: 28 Nov 2015, 06:01
My cats species list: 19 (i:0, k:0)
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Location 2: Canada
Contact:

Re: Live tips to save cory eggs

Post by francoisMtl »

Here is a picture with eggs from three differents corydoras species in the same cup for direct comparison. Eggs that are white and or light cream are non fertilized.
Corydoras venezuelanus light brown, Corydoras metae dark brown, and Corydoras panda dark grey.
C.metae eggs are slightly larger than those from C.panda and almost 1.5 to 2 time bigger than C.venezuelanus. Sure cory experts may know that already but I kind of find it fun enough to mention it in previous message and since I have a picture for it. All those eggs were not spawn on the same days and they are at different stage of development with C.panda near hatching time.
EggsPandMetaVenez497.JPG
Updated list with species eggs protected with snails, with albino C.aeneus :

Catfish:
Loricariidae - Plecos et al

Ancistrus sp. (Gold) ? francoisMtl Montreal,Qc
Callichthyidae - Corys et al
francoisMtl Montreal,Qc
pleconut Bournemouth UK (with cherry shrimps)
francoisMtl Montreal,Qc
bekateen Stockton CA
albinos francoisMtl Montreal,Qc
syno321 Edmonton Ab
Corydoras syno321 Edmonton Ab (PM)
Corydoras MChambers Washington DC
syno321 Edmonton Ab
Corydoras francoisMtl Montreal,Qc
Corydoras MChambers Washington DC
Corydoras syno321 Edmonton Ab
Corydoras syno321 Edmonton Ab (PM)
bekateen Stockton CA
MChambers Washington DC
MChambers Washington DC
MortenDAD Zealand, Denmark (Planorb and cherry shrimps)
francoisMtl Montreal,Qc
francoisMtl Montreal,Qc
MortenDAD Zealand, Denmark (Planorb and cherry shrimps)
francoisMtl Montreal,Qc
MortenDAD Zealand, Denmark (Planorb and cherry shrimps)
MortenDAD Zealand, Denmark (Planorb and cherry shrimps)
(venezuelanus black) francoisMtl Montreal,Qc
francoisMtl Montreal,Qc
bekateen Stockton CA
francoisMtl Montreal,Qc
syno321 Edmonton Ab (PM)
bekateen Stockton CA

Non Catfish:
Archocentrus centrarchus francoisMtl Montreal,Qc
Danio Margaritatus MortenDAD Zealand, Denmark (Planorb and cherry shrimps)
Fundulopanchax gresensi "Takwai" francoisMtl Montreal,Qc
Fundulopanchax nigerianus "Rayfield" francoisMtl Montreal,Qc
Pterophyllum scalare (angel fish) Jody Ottawa On (OVAS forum)
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