Scale of an Animal with a Two-Chambered Heart- Fish

Scale from an Animal with a Two Chambered Heart- 6:30 p.m., August 1^st, in my sister’s room. Fish have scales that help protect their skin, and they also have a two-chambered heart. Fish have a two-chambered heart because they have gills instead of lungs.  This animal is a fish with scales and therefore has a two chambered heart.