Top definition. buck. 1.v: slang for the act of fighting. 2.v: slang for disagree'ing and feeling angry towards something. 3.n: slang for a young black man. 4.n: a male deer. 5.n: slang for money. 1. me: Ray was bucking at lunch..
Several species of sturgeon are harvested for their roe which is processed into caviarâa luxury food and the reason why caviar producing sturgeons are among the most valuable of all wildlife resources. They are particularly vulnerable to overexploitation and other threats, including pollution and habitat fragmentation. Most species of sturgeon are considered to be at risk of extinction, making them more critically endangered than any other group of species.
Also known as Pacific Sturgeon and Columbia Sturgeon. Sturgeon are primitive fish with rows of bony, armorlike plates on their sides and a skeleton of cartilage rather than bones. Their tail looks similar to the tail of the shark. Four barbels hang under the sturgeon's long, flattened snout in front of the mouth.