Question

how fishes maintain homeostasis

Answer 1

Fish are cold-blooded creatures, and most of them cannot control their internal temperature, like humans.and to stay at a healthy temperature, or obtain temperature homeostasis, the fish seek warmer or colder water.

Most fish are poikilothermic, which means their body temperature changes with ambient temperature. In this case, it refers to the temperature of the water around them. 

Answer 2

As Most fish are poikilothermic, which means their body temperature changes with ambient temperature.that's why