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.
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
The average size of a tuna fish ranges between around 15 inches to about 79 inches. The average weight varies greatly, from as small as 3 pounds to as large as 400 pounds.Full Answer >
Fish survive when a lake freezes by receding to the lower depths of the lake where the water is not frozen. In the winter, the water still holds a sufficient supply of oxygen and food for active fish.Full Answer >
A dragon blood cichlid is a type of tropical fish characterized by its fiery red and light blue coloration. This fish is also commonly referred to as a firefish cichlid or golden peacock.Full Answer >
Whether fish feel pain is a point of controversy among scientists, but the consensus is that fish may respond to pain but not in the conscious way that humans respond to pain. Fish lack the neurological sensors that humans have to be receptive to pain, making it likely that fish do not consciously process pain.Full Answer >