Gemfish vs. Barracuda — What's the Difference?

A bottom-dwelling fish of the family Gempylidae, inhabiting deep waters off southern Australia.

A barracuda, or cuda for short, is a large, predatory, ray-finned fish known for its fearsome appearance and ferocious behaviour. The barracuda is a saltwater fish of the genus Sphyraena, the only genus in the family Sphyraenidae which was named by Constantine Samuel Rafinesque in 1815.

Any of various predatory marine fishes of the genus Sphyraena, having an elongated body and a projecting lower jaw with fanglike teeth.

Any large marine fish of the genus Sphyraena that have elongated bodies, a projecting lower jaw, displaying prominent fang-shaped teeth, and are aggressive predators.

(figuratively) One who uses harsh or predatory means to compete.

Any of several voracious pikelike marine fishes allied to the gray mullets, constituting the genus Sphyræna and family Sphyrænidæ. The great barracuda (Sphyræna barracuda) of the West Indies, Florida, etc., is often six feet or more long, and as dangerous as a shark. In Cuba its flesh is reputed to be poisonous. Sphyræna Argentea of the Pacific coast and Sphyræna sphyræna of Europe are smaller species, and are used as food.

A large edible fresh-water fish of Australia and New Zealand (Thyrsites atun).

Any voracious marine fish of the genus Sphyraena having an elongated cylindrical body and large mouth with projecting lower jaw and long strong teeth