Repeat spawning of Dekeyseria picta L052

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bekateen
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Repeat spawning of Dekeyseria picta L052

Post by bekateen » Thu Jan 23, 2020 6:51 pm

Back in late 2017/early 2018, I received a group of Dekeyseria picta (L052), their appearance on arrival shown in my old posts, starting here (Re: How delicate are Pseudolithoxus tigris?), with follow-up posts in the same thread.

On 9-January-2020, I got my first spawn from them (mentioned here: 13 spawns in 6 weeks: It doesn't get much better than this, with additional pics and info here and here).

I'm tickled to report this morning that after two long days of trapping, they have spawned again overnight yesterday. Today the dad is happily fanning a fresh pile of eggs. I'm pretty sure it's the same male as before, since these guys tend to guard a spot once they pick it. But I have no idea if it was the same female. The first spawn was just 13 days ago; to me, that seems like an exceedingly short interbrood period for one female to yolk up another clutch of eggs, if you consider the fact that even common BNs (the most prolific plecos I've met in terms of frequency of spawns) have an interbrood period of about 18-19 days.

But conversely, it's not beyond plausibility that the same female spawned, especially since (also in my experience) once a female 'gets the bug' to spawn, she's going to keep doing it as long as her hormones drive her. That said, when this occurs, I usually find clutch size/egg count tends to decline until a longer interbrood period occurs and allows her liver and ovaries to recover in order to restock needed lipid and protein reserves to make more eggs again.

Cheers, Eric
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Re: Repeat spawning of Dekeyseria picta L052

Post by bekateen » Thu Jan 23, 2020 6:59 pm

Another observation I have about these two spawns - The eggs get laid and tightly secured to the cave wall about half-way between the mouth and end of the cave. Unlike the Ancistrus, Panaqolus, Peckoltia and Hypancistrus spawns I've seen, where the males keep the eggs in front of their faces or under their chins, this Dekeyseria male sits with the egg masses under his abdomen, right in the center of his body between the pectoral and pelvic fins.

Also, both of the trappings I observed concluded with spawns in the mid to late afternoons with lights on and people active nearby. These do not appear to be night spawners in my tank.

Cheers, Eric
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Re: Repeat spawning of Dekeyseria picta L052

Post by bekateen » Thu Jan 23, 2020 10:21 pm

This is getting crazy. While randomly looking around the tank with last night's overnight L052 spawn (spawn #2 within 14 days of spawn #1), lo and behold, there between the rock crevices I see another intact egg mass (spawn #3), this one laid on the bare tank floor!
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Spawn #2
Spawn #2
Spawn #3
Spawn #3
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Re: Repeat spawning of Dekeyseria picta L052

Post by bekateen » Fri Jan 24, 2020 3:16 am

This third egg mass appears to be unattended, so I used a turkey baster to suck it from between the rocks and I moved it to the basket containing the three day old fry (for lack of an alternative place). I count a minimum of 64 eggs.
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Screenshot_20200123-154854_Photos.jpg
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Re: Repeat spawning of Dekeyseria picta L052

Post by Baardman » Fri Jan 24, 2020 4:23 am

congratulations buddy!

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Re: Repeat spawning of Dekeyseria picta L052

Post by bekateen » Fri Jan 24, 2020 5:28 am

Thanks! Let's hope for a good outcome to these spawns. X_X :eusa-pray: :handgestures-fingerscrossed:
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Re: Repeat spawning of Dekeyseria picta L052

Post by bigshawn » Fri Jan 24, 2020 3:49 pm

Congratulations and good luck

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Re: Repeat spawning of Dekeyseria picta L052

Post by bekateen » Sat Jan 25, 2020 11:07 pm

Today I added another fry basket to the tank so that I could isolate the eggs from the existing 5-day-old fry. I moved the egg mass from spawn #3 into the new basket and I also pulled the eggs of spawn #2 out of dad's cave and added them to the same basket. I count a minimum of 79 eggs in the egg mass from spawn #2 (shown below).

Cheers, Eric
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Dekeyseria picta brood 2 79 eggs counted.png
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Re: Repeat spawning of Dekeyseria picta L052

Post by bekateen » Mon Jan 27, 2020 6:53 pm

6-day-old fry from spawn #1. I have at least 20, probably more, surviving fry from this first spawn.

The other two egg masses are developing well. No signs of fungused or dead eggs so far.
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Dekeyseria picta fry 6 days old.png
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Re: Repeat spawning of Dekeyseria picta L052

Post by bekateen » Thu Jan 30, 2020 11:35 pm

Dekeyseria picta L052 spawns #2 and #3 both started hatching today. On advice from others, I made several changes to the incubation of these eggs:
  1. I moved the basket a few inches away from the most turbulent currents, to give the eggs a more gentle incubation.
  2. I added a twig of oak leaves to the basket with the two egg masses; normally I would wait till eggs hatched to add the twig/leaves, but I added it now to disrupt any water currents in the basket, and also these leaves would be softer as food once the eggs hatch, since the leaves would have been soaking for over a week.
  3. I raised the basket out of the water about 1/2 its height. This brought the eggs closer to the water surface, where they would be warmer because of closer proximity to the overhead lights.
  4. I closed the aquarium lid further than usual, slowing the rate of evaporative cooling and raising tank temp. During incubation of the first spawn, daytime temps were around 74F-76F, and later 78F when I closed the lid then. Today the tank was 84F!
Today marks day 8 of incubation and BOTH egg masses have started hatching. If the hatching peaks tomorrow, I'll call that a 9-day incubation period, which is much faster than the 12-day incubation I had for the first spawn at 74-76F.
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20200130_153359.jpg
20200130_153444.jpg
20200130_153427.jpg
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Re: Repeat spawning of Dekeyseria picta L052

Post by bekateen » Fri Jan 31, 2020 1:24 am

Hmmm... Fry deaths have already started. Just pulled out four fry corpses. I should stay away for a day until The Purge is over, then see how many survived. =((

Regards, Eric
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Re: Repeat spawning of Dekeyseria picta L052

Post by Baardman » Mon Feb 03, 2020 8:05 am

Did anymore of your fry pass away?

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Re: Repeat spawning of Dekeyseria picta L052

Post by bekateen » Mon Feb 03, 2020 3:48 pm

Lost at least one of the older fry over the weekend, but I doubt much more than that. But I lost a lot of fry from the second two spawns. That said, this morning I counted at least 5, maybe 10 fry alive and well from the second and third spawns, AND most of the eggs still haven't hatched yet. So maybe it's just the early hatchers that do so poorly.

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Re: Repeat spawning of Dekeyseria picta L052

Post by bekateen » Tue Feb 04, 2020 3:44 am

Late this afternoon I found another spawn (spawn #4) in the cave...
  1. 09 Jan - first spawn occurs
  2. 22 Jan - second spawn occurs (13 days after spawn #1)
  3. 23 Jan - third spawn found (date of spawn unknown, but very recent)
  4. 03 Feb - fourth spawn occurs (12 days after spawn #2)
Dang, I forgot to check in the rocks for a spawn there. #Tomorrow

Cheers, Eric
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Re: Repeat spawning of Dekeyseria picta L052

Post by bekateen » Tue Feb 04, 2020 7:01 pm

I took the spawn #4 eggs from dad this morning. I can count conservatively 67 eggs. I expect there are more on near the center of the mass, underneath the eggs which are visible.

On a good note, most of the rest of the eggs from spawns #2 and #3 hatched overnight and they appear to be doing well. There are still approximately 20% of the eggs in both clutches remaining to hatch. :-BD

On a "don't be greedy, but do be hopeful" note X_X , I checked under the rocks for the other male that spawned before. I saw a fish there (couldn't sex it), but I saw no eggs. I guess this is it for now.
Cheers, Eric
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20200204_104802.jpg
20200204_104802~2.jpg
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Re: Repeat spawning of Dekeyseria picta L052

Post by bekateen » Thu Feb 13, 2020 7:54 pm

One of my oldest D. picta fry. They are 24 days old and the biggest fry is 13mm SL.
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Dekeyseria picta L052 24 days old adj.jpg
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