My manager, used to care for the fish section in our walmart. she said, that one employee during water changes, netting fish, or getting rid of dead fish, would have hives along her arm... They didn't clue in, until they did a test - she was allergic to the fish. It's very possible - some people have different reactions to fish - especially live fish. Do you think this could be a possibility for you?
Breed for the breed, not for the money; the words any REAL breeder would understand.
You must know nothing in order to know all, for all is nothing and nothing is for all.