Are bony fish endothermic or ectothermic?

Question:

Are bony fish endothermic or ectothermic?

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Ectothermic refers to how an animal uses the ambient temperature of their environment and external heat sources to maintain their internal temperatures. At one time, this was inaccurately referred to as cold-blooded or exothermic. Endothermic animals produce their own body heat through metabolic processes.

Answer and Explanation:

All fish, whether bony or not, are ectothermic. Their internal temperatures closely match the temperature of the water around them. By allowing the environment to control their body temperature, they can be more active in warm weather when food sources are more plentiful. In winter, the nearly shut down, allowing them to survive during a season with little to no food resources.


Learn more about this topic:

Ectotherms: Definition & Examples

from High School Biology: Homework Help Resource

Chapter 30 / Lesson 13
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