<img src="https://d5nxst8fruw4z.cloudfront.net/atrk.gif?account=iA1Pi1a8Dy00ym" style="display:none" height="1" width="1" alt="" />
Skip Navigation
Our Terms of Use (click here to view) have changed. By continuing to use this site, you are agreeing to our new Terms of Use.

Fish Evolution and Ecology

Provides an introduction to the evolution and ecology of fish.

Atoms Practice
Estimated4 minsto complete
Practice Fish Evolution and Ecology
Estimated4 minsto complete
Practice Now
Turn In
Fish Evolution and Ecology

Notes/Highlights Having trouble? Report an issue.

Color Highlighted Text Notes
Please to create your own Highlights / Notes
Show More


cartilaginous fish

Ectothermic fish with an endoskeleton made of cartilage; have a complete backbone and jaw.


Organs in aquatic organisms composed of thin filaments that absorb oxygen from water.

lobe-finned bony fish

Ectothermic fish with a backbone and jaw; endoskeleton is made of bones; have thick, fleshy fins.

ray-finned bony fish

Ectothermic fish with a backbone and jaws; endoskeleton is made of bones; have thin, bony fins.


Species that consumes another in a predator-prey relationship.

Image Attributions

Explore More

Sign in to explore more, including practice questions and solutions for Fish Evolution and Ecology.
Please wait...
Please wait...