Where many cichlids are rather insensitive towards crossbreeding, this species Oreochromis mossambicus produces with the related O niloticus infertile offspring. Now this is a huge advantage, fertile Oreochromis start breeding at 6 cm or smaller, and infertile ones just grow, untill cought and eaten...

The correct English pronouncation is not always predictable from the spelling, but I never heard the same spelling has different pronouncations depending on the meaning. You put me in uncharted waters, Victor.

I would expect so, as the a in agamous will have the same meaning as the a in atypical. That is, anti. Or just `not´.

Woud you pronounce the mous part similar to mouse . the rodent?

If I read `Ovophilic, agamous` I would assume both words to refer to reproductive behaviour. Now it does complicate that agamous also has a meaning in cell biology, but here it must refer to pair bonding, as Siluris wrote. Apart from that, fish base writes about normal situations in nature. And any ...

Apart from the personal savety issue - I heard in Sweden people are supposed to unplug heater before getting their hands wet, which would solve this problem nicely - it is always possible to calculate the needed capacity of a heater, and use two heater of half this value. A square meter will loose 6...

Can't say I see any white spot in this saddle.

The edges are white, but that looks like an artifact to me.

fishguy1978 wrote: ↑14 Dec 2020, 22:47

Bas Pels wrote: ↑14 Dec 2020, 19:53 Reme3nber, take 3 days to get there

How detrimental would it be if I added all 40 grams same day?

Can't say, I never tried it.

While not catfish, let alone Corydoras, whgen I was raising cichlids, I always used docorated tanks, with plants and a sand substrate. Obviously, such a tank cannot be kept sterile. But then, fish raised in sterile conditions will not have a very well developed immune system. That is, I don't think ...

Reme3nber, take 3 days to get there

I've had the related Platydoras costatus for 27 years, and every now and then I cured with salt. Never more than 3 g/l, bringing this up with 1 g/l per day

I trust you can count with metrics.

After emptying my 4 meter tank, to get rid of a plague of Amatitlania nigrofasciata, the convict cichlid, but this was a rather nice looking variety from Guatemala, bangfull of corour, but 50 or more was way too much, I put Neetroplus nematopus in the tank, resultikng in another plaque. Both species...

Narelle is right in pointing out that plants need various inputs in order to grow, and quite often light is the limiting factor. However, CO2, phosphates and nitrates are wasteproducts from animals, and fish prefer to have low levels of these. Fish generally are no fans of excessive lighting, and th...

While Vallisneria likes harder water, Sagittaria subulata looks a lot like them, prefers soft water and might be precisely what you are looking for. Frankly, they are hard to tell apart. This tapered shape of the leaves under water is common in Sagittaria. Sagittaria means arrow, but this refers to ...

Synodontis is found all over Africa, and the waters in West Africa are soft. Similar to Amazon water, in fact.

So there are plenty, but these are not easy to find. Active during the day might be hard however.

Thank you!!

This does explain a lot. We were just overlooked in the list of countries.

Odd

As it is a native species in The Netherlands, and protected, I am not allowed to keep them. (not that I intended to do so). But the Netherlands is west of Germany, and thus not on this list.

What strikes me a bit is reading that Siluris glanis is not native, without stating where.

Further down it looks like the where is the Garonne River, Southwest France - but as far as I know, the catfish is native in whole Europe. Perhaps the British island excluded.

This does puzzle me

This stuff is used without any notification to the user? Incredible!

Today I read some compaines producing hand sanitiser in the Netherlands had received warnigs, for not using medical grade ethanol but technical grade. With regards to Racolls comments, technical grade ethanol can contain methanol - but as methanol vaporises at even less warm temperatures, I wonder w...

Looking at the official ingredients, I have troubles clarifying the outcome.

But could it be there are some unofficial ingredients? That is, some waste was willingly introduced into the sanitizer? Criminally, obviously?

As far as I know, in normal cases, after induction of spermiation with hormons the fish will not survive the treatment. Neither do the females.

Further, as this fish is not an egg scatterer, I wonder what this reaerch is all about. You can't breed zebra's by mixing eggs and sperm, and than wait.

With regard to a feeling for conductivity, I don't have that either. conductivity is the opposite of resitance, and some people go al lthe way, saying the unis should be mho, the opposite of ohm. And yes, the normal way to measure conductivity is by measuring the resistance for 2 electrodes of a squ...

Lost of questions, but I think it basically comes down to what happens when a salt dissolves, and what happens when the water evaporates. NaCl is a good example of a salt. It has 1 anion (negative) for each kation (positive) and further, as both ions are a charged atom, these ions are spherical. The...

Stickly speaking, salt is not an anitbiotic, but in many fishes it anhances the natural immunity, helping the fishes getting rid of bacteria. So yes, it does the job.

A TDS meter really measures condutivity. And therefore, it only measures charged particles, ions that is. Now, some antibiotics are charged, but as these are still rather large compounds, I wonder whether the antibiotics would bring tis extra TDS measurement. I would assume the pot contains more, fo...

Wow

Once I got a group of Pimelodella gracilis, but some of them grew out to 30 cm or morte. Obviously not all of them were Pimelodella. Still, in the bag, at 7 cm or so, they all looked the same

I think a lot is still unknown within Heptapteridae

I have some problem interpreting the photos, I see a rather normal looking pleco. I did not mis a fin or so, and all the fins look OK to me. fungus is fluffy and in case of finrot, the affected area is red from inflammation. When a fish is attaced, this area normally is not red, unless it is bleedin...

I am jealous. I think Trichomycterus are among the most enjoyable catfish there are.

You did aerate the RO water? Remember, it is 100 % free of gasses when it leaves the unit. Aerating will increase the level of oxygen, but also thelevel of carbondioxid, aka carbonacid, which will decrease the pH. Normally one takes at least 12 hours for aerating, and in case of the nead to decrease...