- Fish valued for its roe - Primitive bony fish - Source of caviar - Source of caviar and isinglass - Any one of numerous species of large cartilaginous ganoid
fishes belonging to Acipenser and allied genera of the family
Acipenseridae. They run up rivers to spawn, and are common on the
coasts and in the large rivers and lakes of North America, Europe, and
Asia. Caviare is prepared from the roe, and isinglass from the air
bladder.