I have three and they are awsome. When I first got mine though I thought they had jumped out. At the time they were in a 55 with a hob filter turned out they were swiming up the water fall no matter how much I droped the level lol. After they got in the filter they would be stuck. Told the guy at my lfs and he said he never heard of that. Now I have a peice of drift wood that one will swim into a little hole in it and another one will come grab him by the back fin and yank him out. Awsome fish to watch when they are not hideing