My bowfin has not eaten in a long time. I notice he is visibly thin and I don’t know y he won’t eat. I try to feed him bloodworms he’s used to love bloodworms but haven’t eaten in at least a month. The endlich I have with the bowfin as his only tank mate eats just fine. They are in a 76 gallon tank which is big enough at the moment. I have a 220 downstairs to put them in later please help