malawi:
Therefore if we assume that your fish grow up to circa 4inches long you will end up having a 1inch per gallon ratio if I am calculating this correctly.
I don't think that it is a problem, the most important thing is to keep adequate water conditions. From my end I think that I will go for some species that stays in the upper part of the tank because the labs and demasoni stay in the middle bottom.
Hi, i have 4 electric yellow, 3 kahli, 2 red fin, 1 venstus, 2 red peacocks, 1 maylandi peacocks, 1 burtoni and 1 blue dolphin (total 15) and they are all doing well till now. By the way i have 264 liters not 240liter sorry. i would like to add more but i do not know if it ok when they grow larger. Today they are all around 2 inch big.