Dimidiochromis Compressiceps

Datasheet

General Description

Dimidiochromis Compressiceps, commonly known as the Malawi Eye-Biter, is a predatory cichlid species endemic to Lake Malawi. They possess a laterally compressed shape suitable for ambush hunting among Vallisneria beds and shallow waters with submerged vegetation. While their name may suggest otherwise, they primarily feed on small fish, particularly juvenile Copadichromis sp., positioning themselves as an apex predator in their habitat.

Aquarium Setup

For optimal care, a tank size of at least 250 litres is recommended, furnished with rocks forming caves, open swimming areas, and a sandy substrate to mimic their natural habitat. Plant Vallisneria densely, ensuring no strong water current in the tank. Water conditions should be maintained with a pH range of 7.5-8.8, hardness of 10-25°dH, and a temperature between 23-28°C (see table).

Behaviour

The Malawi Eye-Biter exhibits predatory behavior, necessitating caution when housed with fish under approximately 5 inches in length, as they may become prey. They coexist peacefully with larger species, only displaying territorial behavior during spawning periods. It is advisable to have multiple females per male in the tank to prevent individual females from excessive aggression by the male.

Feeding and Diet

While the species are piscivores by nature, in captivity, they can be trained to accept dead foods such as prawns, mussels, and lancefish alongside dried pellets. Their diet should not solely rely on pellets and should include a variety of fresh and frozen offerings to ensure proper nutrition.

Reproduction & Dimorphism

Breeding D. compressiceps can be challenging due to their polygamous maternal mouthbrooding nature. A breeding setup should include flat rocks for spawning, Vallisneria for cover, a pH of 8.0-8.5, and a temperature of 77-81°F. Males show vibrant colors when ready to breed, and females carry broods of up to 250 eggs for approximately 3 weeks before releasing fry. Adult males exhibit striking colors, contrasting with the predominantly silvery hue of the females.

Habitat and Distribution

Found in shallow waters near submerged vegetation in Lake Malawi, Dimidiochromis Compressiceps thrives in rocky areas with ample hiding spots and opportunities for ambush hunting. The species' distribution is largely concentrated within the confines of Lake Malawi, showcasing a preference for the diverse aquatic environments present in the region.