so yesterday i went to the pet store to get ideas for a 20 gallon that i found. i currently have a 55 gallon with a breeding pair of jack dempseys. i also have a 60 gallon with two male jack dempseys which i am thinking of getting rid of. so while im at the pet store i have a thought... why not get covicts so i will have free feeders! problem is i only have a 20 gallon empty. so now i know i need another tank for the covicts or possibly use one of the larger tanks i have now. question is what is the smallest size tank i can get away with for a breeding pair of black convicts?