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This is a 2 1/2 to 3 1/2 year old a. ladisalo; i moved him with the female i think he paired with to a 15 in hope they will breed (they were in a 40b with some other females).
Yes i 'spoke' to someone on another forum who is far more knowledgeable these are likely a marginatus variant - he thinks they were previously known as 'picturatus' - i found this picture on a generman website:
https://www.aqualog.de/en/lexikon/nannostomus-marginatus-4/
Mine has a more full...
Shouldn't be - they pair and as far as i can tell the bond is pretty strong but as long as the tank is large enough for the other males to move out of the way she won't bother them. I had 5 males with a female in a 65 (48 long 16 wide). I even had a pair of a. ladisalo in there and she left them...
A few comments:
a) The water is pretty darn hard for rams (domestic or wc) if it is 100+ kh/gh.
Can they live in this water - i suppose they might but they won't be able to breed and they might not live.
This is a delicate fish that does best with tds below 100 and 40 is better.
b) The temp...
If everything is all good why are they dying? Perhaps your view of 'parameters are all good' doesn't match what the fish expects or think is good.
Are these frys, 1 inch or young adults. Is the tank cycled? The tails being clamped suggest either aggression or they don't agree with you that...
In truth water that is extremely soft will settle on a low ph. My discus tank claims to have 4.5-4.7 ph and a steady state of 20 ec; though enough decaying matter like leaves will raise the ec. It takes very little to impact ph and/or ec at the low end. Conversely it is very difficult to...
But again do chcoolate gourami require much lower ph or is that just what someone measured and was too lazy to check tds/kh/gh ? I've kept and bred fishes that others stay require ph 4.x at somehwere between 5.7 and 6.1 and had no problem breeding them and keeping them alive.