In the wild, survival is a tough game. Everyone has heard of the law of the jungle i.e. Kill or be killed. That also applies right in your aquarium, especially if you got a lot of fish who end up competing against each other to get bigger and better.
Fish have their own ways of combating each other or other competitive species, in order to protect themselves or their territory. Cichlids make extreme warriors of the water world. They are smart and agile.
Convict Cichlids which are very common in the aquarium trade, are a very aggressive species that make great fighters. They are known to