Do we have fish that is homothermic in nature??

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Roberto Bencini

The Opah (Lampris guttatus) is the first homeothermic (warm-blooded) fish ever discovered.

See https://www.livescience.com/50839-first-warm-blooded-fish-found.html

Rakesh Prasad Bhagat

So far I know, few marine fishes that contains high lipid content like sardines are warm-blooded.

Furkan Alaraji

I think that the Opah is the first homeothermic fish.

egards

Stanley Iheanacho

Thanks Furqan for your answer