I just got a Zebra Loach and 2 Clown loaches and 3 cardinal tetras a couple days ago. And one other fish but I forget the name. I was wondering if I should get another zebra loach so he won't be the only one in there. Also I was wondering if I should get some sort of cave that the zebra loach can hide in. Because when I watch him it looks like he is trying to make himself comfortable in different places but just can't find a place. I do have a rock that fish can go under but I've only seen him go under there about twice and not for very long. The zebra loach and one of the clown loaches like to sit right behind the heater in the tank and they rest on the spot where it connects to the tank and sometimes they kind of fight over the spot. The clown loach will be in there and then the zebra loach will come up and try to squeeze itself in or sometimes it will push the clown loach out of the way and make room for itself. I don't want the zebra loach to get stressed. And the zebra loach is pretty active but I'm not sure if it's a good thing because I know they like to hide alot. What should I do about the zebra loach?