The tuna fish generally eats smaller fish that range in size from 1.5 inches to 6 inches, although they will also eat crustaceans, crab larvae and squid from time to time. The diet of the tuna fish is opportunistic by nature, with tuna eating whatever fish happen to live in the waters around them.Continue Reading
Although diet varies by region, some of the fish that are consumed by tuna include flying fish, skipjack, puffer fish, rabbit fish, triggerfish, surgeon fish and lancet fish. Generally, the fish preyed upon by the tuna are those that travel in schools, although area of the ocean has a lot to do with what the tuna eats. For example, the Bluefin tuna population in the north Atlantic feed mainly on sand lance, while herring and mackerel are big parts of the diet of tuna in the Gulf of Maine.
Tuna have been known to swim incredible distances to feed. In fact, some tuna originating in the Gulf of Mexico swim across the Atlantic Ocean to the coast of Europe to feed before swimming back to their birthplace to breed.
Researchers say that Bluefin tuna have huge appetites and require a large quantity of fish to survive. Atlantic menhaden are the most common prey of the Bluefin in its most populous region, the western Atlantic, although populations of both the Bluefin and its favorite food are dwindling in the face of commercialized fishing.Learn more about Fish
Rainbow fish are omnivores that eat a variety of foods in the wild, including aquatic and terrestrial insects, insect larvae, crustaceans, phytoplankton, zooplankton and detritus. A suitable diet for the aquarium includes algae, vegetables, frozen and live mosquito larvae, Daphnia and bloodworm.Full Answer >
While goldfish will eat crustaceans, insects, plants and smaller fish in the wild, those that are kept as household pets most often eat commercially made goldfish food. This can be safely supplemented with shelled peas, cooked vegetables, brine shrimp and blood worms.Full Answer >
Flounder are flatfish that eat shrimp, crustaceans and other fish. Adult flounder can eat between 4 and 8 percent of their body weight every day.Full Answer >
Dragon fish are carnivorous and have a large diet that includes crustaceans, especially shrimp, and at least 50 different species of fish. Dragon fish employ their pectoral fins for securing their food sources.Full Answer >