Hi MiniMellow,
Welcome to PlanetCatfish!
To answer your question, with your two tanks being what they are (in US gallons, about 15 and 16 gallons respectively), neither of those tanks will be a long term solution for either your
or your
. And don't even think about keeping a growing
happy for long in those tanks. These fish get much too big. The other issue I see is this: If I were keeping L204 and L046, (which I have in the past but I don't currently have), I would keep them at around 27C-29.5C. I don't know what L273 or L128 prefer (other than what you can read in the CLOGs and BLOGs here), but when I keep
bristlenoses, assuming yours is a common
Ancistrus, I'd be keeping them at around 23-25C. I know that's not a huge difference, and you could probably put them all together at 26C, but none of them would be really happy I suspect.
My two cents is keep the bristlenose in the 57 and maybe get another bristlenose of opposite sex if you want to try and breed them. Get a bigger tank (110L or more, with a long or "low" profile rather than a tall profile, to provide more floor space) for your L128 and L204. Don't get any
until you get a much larger tank. The zebra (L046) would be okay in either the 57 or 60L tank, but because of the temperature difference, I wouldn't keep it with the
Ancistrus.
Good luck,
Eric
