Question

1. which of the following fish are bilaterally flattened?

○ coelacanths
○ rays
○ sharks
○ chimaeras

Explanation:

Coelacanths, sharks, and chimaeras have a fusiform (torpedo-shaped) body adapted for swimming in open water. Rays are cartilaginous fish with a dorsoventrally (bilaterally, top-to-bottom) flattened body, which is suited for their benthic (bottom-dwelling) lifestyle.

Answer:

rays