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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 caugh... More »

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The differences between bigeye tuna and yellowfin tuna, the two species of ahi, are that bigeye has extremely large eyes, a plump body and a larger head than yellowfin. Yellowfin tuna has bright yellow finlets with soft ... More »

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The gender of male and female blue catfish can be determined by the distinctive humps that appear on the backs of the males between the dorsal fins and the head. The females are more streamlined and can reach any size, b... More »

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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. More »

www.reference.com Pets & Animals Marine Life Fish

Some types of fish are sharks, rays, lampreys, catfish, lungfish, herring, tuna, pufferfish, coelecanth and gobies. Other types include angelfish, tetras, gouramis, cichlids, guppies and goldfish. Each of these refer to ... More »

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Fish that are high in omega-3 fatty acids are fatty, coldwater fish such as salmon, tuna, black cod, tilefish, halibut, swordfish, mackerel, anchovies, sardines, trout and herring. Omega-3 fatty acids are polyunsaturated... More »

www.reference.com Pets & Animals Marine Life Fish

A short list of well-known predatory fish includes sharks, tuna, rays, salmon, and swordfish. There are numerous additional types of predatory fish, such as grouper, perch, gars, piranhas and bucktooth tetras. Other exam... More »

www.reference.com Pets & Animals Marine Life Fish