I have a 40 gal breeder with a pair of mextico blues, a female red saum, 3 skunk loaches, , 4 red lipped loaches, 6 true green terror growouts , a bamboo shrimp, 2 golden wonder killies, 5 rainbows, one female mextico blue , 4 cories and 10 otto cats. The female saum is there until she heals up after be harrassed by a male and the true green terrors are in there until they get bigger and then a pair will get there own tank if all works out.