If you are going to feed your fish live guppies on a long-term basis, get a separate tank (29 gallons or so), buy some common guppies, and breed 'em yourself. Otherwise, you are just playing Russian roulette, waiting for the time when the feeders you bring home have some nasty disease or parasite, and your fish catches it while eating them.
Also, feeders are not particularly nutritious. Even in the wild, piscivorous fish generally supplement their diet with other items (shrimp, plants, etc.). So either feed your feeders with a high quality flake food just before adding them to the "tank of doom", or add some frozen bloodworms and plankton to the feeding regimen periodically.
Also, feeders are not particularly nutritious. Even in the wild, piscivorous fish generally supplement their diet with other items (shrimp, plants, etc.). So either feed your feeders with a high quality flake food just before adding them to the "tank of doom", or add some frozen bloodworms and plankton to the feeding regimen periodically.
