My biggest bronze cories are almost 3 in long and swim around a lot, so I don't think they're a good choice for this small a tank. If you want a cory species, it would be better to choose one that stays below 2 inches and is less active.sylvia said:4 bronze cories would also be ok
Well, I disagree.sylvia said:Actualy I think 15 gallons is resonable for cories but they are active. Bronze are by far the hardiest and most cories grow to 3 inches but are counted as half their size because they don't produce a lot of waste.