American Flagfish are a unique and helpful addition to your backyard pond. This fish is known for eating algae, which makes them very beneficial. They will help keep your pond looking clean and beautiful while they consume the algae. Their colors will brighten up when added to a pond or aquarium with a dark substrate. If algae become scarce, be sure to supplement their diet with freshwater algae flakes and small meaty foods. They prefer to have plenty of plants to hide within.