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"Gulf sturgeon, also known as the Gulf of Mexico sturgeon, are "anadromous" fish, inhabiting coastal rivers from Louisiana to Florida during the warmer months, and the Gulf of Mexico and its estuaries and bays in the cooler months. Sturgeon are primitive fish characterized by bony plates, or "scutes," and a hard, extended snout; they have a heterocercal caudal fin (their tail is distinctly asymmetrical with the upper lobe longer than the lower). Adults range from 4-8 feet (1-2.5 m) in length, females attain larger sizes than males. They can live for about 60 years; usually 20-25 years."
(Office of Protected Resources, http://www.nmfs.noaa.gov/pr/species/fish/gulfsturgeon.htm)
The Atlantic sturgeon is a long-lived, estuarine dependent, anadromous fish. Atlantic sturgeon can grow to approximately 14 feet (4.3 m) long and can weigh up to 800 lbs (370 kg). They are bluish-black or olive brown dorsally (on their back) with paler sides and a white belly. They have five major rows of dermal "scutes".
(Office of Protected Resources, http://www.nmfs.noaa.gov/pr/species/fish/atlanticsturgeon.htm)