I have a small bowfin since last Aug. He is about 12" (grew 4 extra inches since Aug). For some reason, he is fussy toward to the feeder fish as he only eats fathead minnows but won't touch goldfish, guppies and red rosies. I did isolated the goldfish and other feeder fish for over two weeks but the bowfin won't eat them unless I throw a normal colored fathead there and he is very eager to chase down that specific feeder fish and gulped up that fathead. I can't keep buying fathead minnows from bait store as they always give us too many minnows (One scoop) that can feed my bowfin for two months but I don't have any large tank that can hold over 30 minnows for longer periods. That's why I started to buying feeder fish from LFS and start to isolate them for diseases. I don't know what to do...should I keep buying fathead minnows for the bowfin?