Which of the Following are the Most Abundant and Diverse

Question

Which of the following are the most abundant and diverse of the extant vertebrates?
A)ray-finned fishes
B)birds
C)amphibians
D)nonbird reptiles
E)mammals

Accepted Answer

Ray-finned fishes are the most abundant and diverse of the extant vertebrates, with over 30,000 species known. This group includes popular species such as salmon, trout, tilapia, and goldfish. Birds, amphibians, nonbird reptiles, and mammals all have significantly fewer species in comparison to ray-finned fishes.