The cichlid fish is a type of fish that is scared the most by one thing; its own reflection. A new study shows that a cichlid that fights it's own reflection might be more dangerous than fighting another fish. The cichlid will attack other males along with its own reflection. The study shows that a cichlid that has just fought with it's reflection is more afraid than if it fought with another fish. Scientists have also found similar activity in other animals like dolphins and elephants.
I have heard of animals doing stuff like this and I always thought why they did this was because of reactions. Seeing another animal will trigger something in the brain so it goes on attack mode. This is a good survival method for all animals but it could be dangerous. Maybe in the future we can fully understand why animals do things like this. Animals do everything to survive.