I have 12 clowns sizes range from 1in to 5in with 4 platys, 2 zebra danios, couple plecos, 1 farowella, 1 fire eel, couple cory cats, dojos, yoyos, crabs, 3 amino shrimp (eel hasnt seen them yet i dont think lol), flounder, 2 red tail sharks, hillstream loach. now im thinking im overstocked lol its in a 280G tank though and never had any problem with the loaches messing with anyone. just make sure you have plenty of tank space and hiding places for the loaches and other fishies! mine have never even chased the other fish or payed them any attention