Best answer
Small brains
People also ask
Do fish have a brain and nervous system?
The Brain and Nervous System of Fish Being highly complex life forms, fish need a brain and a nervous system to control their body actions. The nervous system of fish (much like ours) is composed of a central co-ordinating brain, a spinal cord and many, many nerves.
Do starfish have brains?
The starfish do not have a brain, but they are not fools. They have a complex nervous system that allows them to make a decision. This nervous system is centralized in the ring around the mouth. You must have thought that starfish spends all of its life by just sticking on a single rock. But in reality, that is not the case.
What is the average brain size of a fish?
Meaning a 5 kilo specimen would have a 6.5 gram brain, still its is a pretty dumb fish. Most fish have brains that are less than 1 percent of their body weight, but not all. At the other end of the continuum of fish intelligence is the electric Elephantnose fish.
What do fish need to live?
Being highly complex life forms, fish need a brain and a nervous system to control their body actions. The nervous system of fish (much like ours) is composed of a central co-ordinating brain, a spinal cord and many, many nerves.