Okay I will attempt not to over test. But I already had a fish die less than 24 hours after bringing it home. After thinking about it for a bit, and seeing the other to fish behaving normally I decided that it was just a bad fish from the store. As soon as I put it in the tank it started swimming really erraticly, and running into the sides of the tank. The other 2 were just hanging out and checking out the tank, very peacefully. So I got a replacement from the fish store.