Are all fish cold-blooded?

It is not exactly true that all fish are cold-blooded.

Are fish cold-blooded? - Practical Fishkeeping

Fearsome megalodon was likely warm-blooded

The first known warm-blooded fish – Why Evolution Is True

Fish Limbless Coldblooded Vertebrate Animal Isolated Underwater Creature Dwelling In Water Of Sea Or Ocean Oceanic Life Vector In Flat Cartoon Style Stock Illustration - Download Image Now - iStock

This is no cold fish!

Are all fish cold-blooded?

Warm-blooded Fish Cartoons and Comics - funny pictures from CartoonStock

Giant Sea Reptiles Were Warm-Blooded Killers?

We solved the mystery of why some fish are warm-blooded - Reaction

The Opah, or Moonfish, is the only known endothermic (“warm-blooded”) fish, and can keep its entire body 5 °C warmer than its environment. : r/Awwducational

Ichthyology: the world's first warm-blooded fish

FishingBooker: Do fish get cold? How Fish Survive Winter

Meet the Opah, the First Warm-Blooded Fish Ever Discovered

Why are fish cold blooded? – The Fisheries Blog