Question

Fishes can remain _____ water to keep themselves warm.​

Answer 1

Answer:

Explanation:

At sea, water masses present different temperatures: the shallower waters has higher temperatures than the deeper. Fishes can choose to stay in a specific water mass or another and they maintain the same temperature. This is a single example of behavioural thermoregulation

Answer 2

Answer:

The layer of ice that forms on top of a lake, pond, river, or stream provides some insulation that helps the waterbody retain its heat. Because warm water sinks in very cold freshwater, fish in these water bodies often gather in groups near the bottom.