Nandopsis tetracanthus

Nandopsis tetracanthus, the Cuban Biajaca, is the largest cichlid native to Cuba and holds the distinction of being one of the few cichlids with a Caribbean island distribution. It inhabits rivers, streams, and coastal estuaries throughout Cuba, displaying remarkable ecological flexibility including tolerance for low salinity. Adults are impressive fish: large-bodied with an intricate pattern of dark blotches and irregular bars overlaid with blue-green iridescence.

In the aquarium, the Cuban Biajaca is a powerful, territorial fish that commands significant space. It is an omnivore-leaning-carnivore and will consume smaller tankmates without hesitation. Despite its aggression, it is an intelligent and personable fish that often develops a recognition response to its keeper.

Breeding is similar to other large Nandopsis — pairs spawn on flat surfaces and both parents guard the brood with great vigor. The species can tolerate slightly brackish conditions, which provides an additional management tool for parasite control.