Are all fish cold-blooded?

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

World's First Fully Warm-Blooded Fish Discovered in the Pacific Ocean

The Opah Fish is Warm-Blooded! - JSTOR Daily

First fully warm-blooded fish found in deep ocean

Fish exotic cold blooded animals seamless pattern Vector Image

Not-So-Cold-Blooded Creatures

Deep-sea fish found to be warm-blooded › News in Science (ABC Science)

Fishes are Cold Blooded Animals in the World that are Covered with Scales and Equipped with a Pair of Fins To Swim in the Water. . Stock Illustration - Illustration of anemone

Are fish cold-blooded? - Practical Fishkeeping

Scientists have discovered the first fully warm-blooded fish - The Washington Post

Fishes are Cold Blooded Animals in the World that are Covered with Scales and Equipped with a Pair of Fins To Swim in the Water. . Stock Illustration - Illustration of vertebrate

Dormancy - Cold-blooded, Vertebrates, Hibernation

Fishes are Cold Blooded Animals in the World that are Covered with Scales and Equipped with a Pair of Fins To Swim in the Water. . Stock Illustration - Illustration of aquarium

You should have learnt in school that - BlueTree Education

Our Warm Blooded and Cold-Blooded Ocean by Baby Professor

How Hot Tuna (and Some Sharks) Stay Warm