Yeah they go at it chase and and show off but no nipps or anything. If they have any defects they came to me that way. But i definity know they arent normally all suppose to be together and yes i know i need a larger tank. But being i live with someone who thinks 90 is large enough why need 2 tanks i havent got a new tank..pluss like i said they are beautiful fish but not what i was really going for with my tank but considering i did have space its like all my employess are like yeah we have someone who can house them and the customer leaves so almost like im obligated now to take the fish. NO MORE though....