Yellowfin tuna have yellow sides, blue backs, silver bellies and can weigh up to 450 pounds, whereas Pacific yellowtail have yellow stripes across their bodies, a yellow tail and weigh between 10 and 20 pounds when caught on a line. Yellowtail, or Seriola lalandi, is not a species of tuna and generally weighs less than a yellowfin, or Thunnus albacares.Know More
Yellowtail are considered a delicacy in Japanese cuisine as an ingredient for sushi. These fish, called hamachi in Japan, are grown on farms and exported to other countries. As of August 2014, the longest yellowtail ever caught was more than 8 feet long, and the largest specimen ever recorded weighed more than 213 pounds. Yellowtail live in subtropical waters all over the world. Yellowtail feed on mackerel, sardines, anchovies, crab and squid.
Yellowfin are actual tuna found in all three oceans of the world. These fish swim with other tuna species, and they associate with dolphins. As of August 2014, the longest yellowfin recorded was 7.8 feet and was caught in Florida. The heaviest yellowfin recorded was 441 pounds. The largest school of yellowfin is found in the eastern Pacific Ocean from Chile to California. Yellowfin are a top predator in the ocean food chain.Learn more about Fish
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 >
Bluefin tuna feed primarily on other fish, including herring, anchovies, sardines and mackerel, according to the Office of Protected Resources. Young bluefin tuna also eat some crustaceans. The bluefin tuna is the largest of the tuna species, and it is an important large predator in the Atlantic Ocean.Full Answer >
Tuna live in the open sea of oceans worldwide, although specific zones are dependent on species. The bluefin tuna, for example, lives in tropical and temperate waters of the Atlantic, the Pacific and the Mediterranean. The bigeye tuna lives in the previously mentioned areas with the exception of the Mediterranean.Full Answer >
The lateral line of a perch allows it to detect vibrations caused by both predators that threaten it, such as hawks, and prey that it might want to eat, such as minnows. The lateral line also helps the perch detect changes in the current and in the water pressure.Full Answer >