I have lost 3 forgs over the past two weeks. I am feeding them frozen bloodworms but they dont seem to be eating them. They share a 10 gallon aquarium with 3 black mollies 3 catfish, 5 guppies and 3 clear Painted fish. I have a bubble curtin in the back. The temp. stays at 78 all year around. Could there be to much movement in the tank?