Hey guys. I have a 375 aquarium and was curious about how many tinfoil barbs would be acceptable. I'd like to have a group of 7-9 but am unsure if this will make them cramped. Other inhabitants include a (young) oscar, 2 jack dempseys, a green terror, 2 Peruvian cichlids, a pictus cat, a common pleco, and a Hawaiian flagtail.