If you have a predatory fish, you might have been recommended to feed live fish in order to stimulate natural hunting instincts and to give a varied diet. Feeder guppies are particularly easy to breed and will offer your fish the excitement and nutrition that it needs. These guppies resemble the wild-type in coloration and finnage and most common/feeders are bred for one specific purpose, and that is to be fed to larger fish or other animals.
The smallest tank that should be used for feeder guppies is 10 gallons (37.9 L). This is sufficient for 10-15 feeder guppies, depending on their size.