Dolphins, apes, and dogs come to mind when we think of clever animals, but the undersea world has its own brilliant creatures. Some fish are far clever than we ever thought. They use tools, solve problems, identify people, and even devise plans!
Let’s explore the top 5 intelligent fish that will fundamentally alter your perspective on marine life.
- The Cleaner Wrasse – The Self-Aware Genius

The scientific community was taken aback when this tiny, vibrant reef fish successfully completed the mirror test, a traditional test for self-awareness.
. It is aware of its own reflection.
. able to recall specific seafood
. creates “stations” for cleaning where larger fish congregate.
The cleaner wrasse is as intelligent as certain birds and mammals, according to experts!
- The Manta Ray – The Underwater Einstein

Manta rays are incredibly intelligent fish with one of the biggest brains.
They are able to:
. Identify oneself in mirrors
. Create enduring connections
. When swimming, use communication signals.
Manta rays even seem to “play,” which is a clear indication of highly developed cognitive abilities.
- The Cichlid – The Master Strategist

Although cichlids are well-known aquarium fish due to their vivid hues, they are actually highly intelligent animals.
. They employ sophisticated strategies to keep their young safe.
. They pick up territory maps fast.
. They use strategy when engaging in combat and mating.
Certain cichlids are even able to watch other fish engage in combat and choose which ones to take on.
- The Memory Expert: The Betta Fish

In addition to their beauty, betta fish, often known as Siamese fighting fish, have exceptional intelligence.
They are able to:
. Identify their proprietors
. Discover tricks
. Recall patterns for several weeks.
. Solve easy puzzles
The responsiveness and curiosity of bettas often astounds pet owners.
- The Arapaima: The Intelligent Giant of Antiquity

The Arapaima, one of the biggest freshwater fish in the world, is a living dinosaur with an astonishing brain.
. It makes use of unique breathing methods.
. Hunts employing strategic ambush tactics
. Recalls prey movements and water routes
It can survive in harsh Amazonian conditions thanks to its intellect.
Final Thoughts
Contrary to popular belief, fish are incredibly intelligent. These five species demonstrate that the undersea world is full of intelligence and surprises, from self-awareness to strategic reasoning.
Remember that fish may be more intelligent than you realize the next time you encounter one.
