Can a fish smile?
Sarah Scott
Updated on April 06, 2026
But do they really smile? Not likely. In sharks and other fish, the parts of the brain related to feelings aren't developed enough to produce a smile. Some animals do apparently show feelings such as happiness, anger and fear.
How do I know my fish are happy?
Generally speaking, following are some of the ways you can tell if your fish are happy.
- They swim back and forth freely and energetically around the tank.
- Quite like humans, happy fish might have a vibrant glow to their skin. ...
- They do not appear fearful of the other fish in the tank. ...
- They are breathing normally.
Do fish feel emotion?
Fish have pain receptors and the capacity to sufferWhile we might not be able to read pain on a fish's face, the evidence is increasingly clear that they experience a range of emotions including fear, joy, relaxation and playfulness.