Which of the following animals is/are poikilotherms?

Fish

Insects

Birds

Crocodile

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Question

Animals that cannot generate internal heat are known as poikilotherms (poy-KIL-ah-therms), or cold-blooded animals. Insects, worms, fish, amphibians, and reptilesfall into this category—all creatures except mammals and birds.
Thermoregulation is an organism’s ability to keep its body temperature within certain boundaries, even when they have to face different temperature in varied surroundings. Thermoregulation is divided into different types including Endothermic (homeothermic or warm-blooded) or Ectothermic (poikilothermic or cold-blooded).

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Animals that cannot generate internal heat are known as poikilotherms (poy-KIL-ah-therms), or cold-blooded animals. Insects, worms, fish, amphibians, and reptilesfall into this category—all creatures except mammals and birds.
Thermoregulation is an organism’s ability to keep its body temperature within certain boundaries, even when they have to face different temperature in varied surroundings. Thermoregulation is divided into different types including Endothermic (homeothermic or warm-blooded) or Ectothermic (poikilothermic or cold-blooded).