Cyrtocara Moorii

Datasheet

General Description

The Malawi Blue Dolphin, scientifically known as Cyrtocara Moorii, is a gentle giant previously classified as Haplochromis moorii. This species, also called the "Humphead Mouthbrooder," is a micro-predator attracted to live and frozen foods such as bloodworms, brine shrimp, earthworms, and prawns, with dried foods also included but not as the sole diet. Endemic to Lake Malawi, these fish reach sizes of up to 25.0cm and require a minimum tank size of 250 liters.

Aquarium Setup

For optimal care, provide a tank with a sandy substrate and ample open swimming areas, keeping rockwork minimal to prevent injuries in this flighty species. Water conditions should maintain a pH of 7.5-8.8, hardness of 10-25°dH, and a temperature range of 25-29°C. A detailed setup guide can be found in the table provided.

Behaviour

Malawi Blue Dolphins are peaceful but intimidating due to their size. They should not be housed with boisterous species like mbuna. Suitable tankmates include Frontosa, peaceful Haps like Fossorochromis rostratus, and Rift Lake Synodontis species. Maintained as a group, it's advisable to have 2-3 females per male to diminish territorial behavior during spawning, which the males display.

Feeding and Diet

Mainly micro-predators, these fish thrive on live and frozen foods, with a preference for bloodworms, brine shrimp, and earthworms. Dried foods can supplement but should not be exclusive to their diet. Variety is key to optimal nutrition and health.

Reproduction & Dimorphism

Breeding Malawi Blue Dolphins can be challenging. They are polygamous maternal mouthbrooders requiring specific tank conditions, including flat rocks for spawning and ample sand areas. Males court females around chosen spawning sites, with females carrying and protecting the brood before releasing free-swimming fry. Sexual dimorphism is difficult, with both sexes exhibiting a nuchal hump and similar coloration.

Habitat and Distribution

In their natural habitat of Lake Malawi, these fish inhabit shallow waters with sandy substrates. Despite their widespread distribution, they are not abundantly common in the lake due to specific habitat preferences and behaviors.