These are territorial fish that should only be housed with other suitable aggressive fish, generally in a species only aquarium. They can sometimes be housed with semi-aggressive tankmates, but check first.

It is important to research tankmates with the aggressive species as with some they can only be housed with their own species.

Please note- The list populated below are all the fish we have marked as aggressive but they cannot all go together so please research before you buy.

Please call or email for advice if you are unsure.