There are 27 species that belong to the sturgeon family. Virtually unchanged for 200 million years, Sturgeon are true living dinosaurs that can reach upwards of 15 feet in length and weigh up to 1800 pounds.
Several species of sturgeon are harvested to produce caviar. Sturgeon are smooth-skinned and don't have scales.
Famous sturgeon species are beluga, white sturgeon (A. transmontanus) and Siberian sturgeon (A. baerii).
Carp (Cyprinus carpio) originally come from Asia, but since ages they are native to Europe. In the Middle Ages, monks introduced carp into ponds and lakes for food. Carp thrive in virtually any environment and can grow up to 80lb! Carp fishing is extremely popular in the U.K. and in Western Europe.
Salmon is a generic name for several species from Salmonidae family. In fact there are eight species distributed in the Pacific Ocean (like for example the Chinook salmon, Pink salmon or the Sockeye salmon) and one species from the Atlantic Ocean (the Atlantic salmon).