Breeding is the only safe way. Besides, even if it may seem tedious, you must take into account that feeders should not be a staple.
So I advise the following as feeders:
Convicts
Guppies
Economically Worthless Platies and Swordtails
Good yield and lack the theasamine that Goldfish have, which kills vitamin B1.
So I advise the following as feeders:
Convicts
Guppies
Economically Worthless Platies and Swordtails
Good yield and lack the theasamine that Goldfish have, which kills vitamin B1.