AP BIOLOGY

Detailed explanation-1: -Answer and Explanation: The members of the class Osteichthyes that are the most abundant are the ray-finned fish. They are the members of the subclass Actinopterygii, which has over 25, 000 member species.

Detailed explanation-2: -Teleost fishes are the largest and most diverse group of vertebrates. The diversity of teleosts has been attributed to a whole-genome duplication (WGD) event in the ray-finned fish lineage.

Detailed explanation-3: -Tropical reef clown fish, freshwater eels, pelagic swordfish, deep water anglerfish, and river dwelling catfish are all examples of fish in the class Osteichthyes.

Detailed explanation-4: -Osteichthyes are commonly called bony fishes. Osteichthyes is a class of jawed fishes having a bony endoskeleton. It is the largest class of vertebrates and includes a diverse group of marine and freshwater bony fishes.