I just bought 3 glass cat fish and my rainbow shark keeps picking on them ones in permanent hiding cuz hes the littlest the other two are just fine they are fine with it sometimes but i worry they will tire or eventually just hide non stop. Can the rainbow shark hurt them? The glass cat fish are around the same size as the rainbow shark bar one hes kind tiny im wondering if i get 2 more bigger ones it will help asert dominance kind of a little but im worried if i get bigger ones they wont be able to swim away as fast. See the rainbow shark does leave them alone but when he does they can get away from him most of the time because they are faster and the rainbow shark gives up for a bit. What do i do?