Camphilophus;4493669; said:Don't mix him with convicts a 20gallon is too small to keep this flowerhorn in especially with tank mates. If the 20 is all you have you'll need to get a bigger tank for your flowerhorn they need a 60gallon minimum but a 75-90 is more ideal.
thanks for your answer and concern about tank size.
i think i can gauge the fish being in its proper tank size or not. i keep monster fish too - see my jardini. 20g long is fine for this FH and the two convicts (at 3") atm if they would get along OK. my question was referencing more about the fishes' temperament and their compatibility then tank size.
so will they fight till death? the two convicts are chasing each other from time to time but nothing major between them... i'm thinking of putting the male convict back into the tank first since it's less aggressive and see how thing goes...