I have been trying to catch my 3 blue/green chromis from my 29 gallon cube, had managed to catch one so far, he lived in frag tank with Banggai cardinal while his friends were left in cube as they are buggers to catch, well when I checked on tank this morning, there was only the Banggai in frag tank and the chromis dried up on the ground beside the cube which is prob 3-4 feet away.