Fishes Have a Two- Chambered Heart, a Single Atrium, and a Single

Question

Fishes have a two- chambered heart, a single atrium, and a single ventricle.

Accepted Answer

Fishes, specifically those in the class Osteichthyes (bony fishes) and Chondrichthyes (cartilaginous fishes), have a two-chambered heart consisting of one atrium and one ventricle, which is part of their single-circuit circulatory system.