Aphyosemion Cognatum

Datasheet

General Description

The Aplocheiloid-Toothcarps, specifically the Aphyosemion Cognatum species, are part of the Cyprinodontiformes order and belong to the Nothobranchiidae family. They typically reach a maximum size of around 5.0cm. Originating from Leopoldville, now known as Kinshasa, in the Democratic Republic of Congo, their distribution spans the middle and lower Congo regions. Specimens have also been discovered in Lac Fwa, situated west of Kinshasa, which is a Congo River tributary.

Aquarium Setup

To successfully keep Aphyosemion Cognatum in an aquarium, it is essential to replicate their natural habitat. A well-planted tank with ample hiding spots and subdued lighting is recommended. This species thrives in water with a temperature range of 22-26°C and a pH level between 6.0 and 7.0. For more detailed setup guidelines, refer to the table below.

Behaviour

Aphyosemion Cognatum are known to exhibit typical behaviors of toothcarps, displaying curious and active swimming patterns. They can be territorial, especially during breeding periods, and may engage in chasing behavior amongst themselves. However, they are generally peaceful when kept with compatible tank mates.

Feeding and Diet

In their natural habitat, Aphyosemion Cognatum primarily feed on small insects, crustaceans, and zooplankton. In a captive environment, they readily accept high-quality flake food, frozen, and live foods such as brine shrimp and bloodworms. It is essential to provide a varied diet to ensure their nutritional needs are met.

Reproduction & Dimorphism

Breeding Aphyosemion Cognatum can be a rewarding experience for aquarists. Males of this species are more colorful and usually exhibit longer fins compared to females. To induce spawning, a separate breeding tank with plants for egg laying is recommended. These fish are known to lay eggs, which will hatch after a period of time, producing fry that should be carefully cared for until they are mature.

Habitat and Distribution

Aphyosemion Cognatum originate from the Democratic Republic of Congo, particularly the regions around Kinshasa. The exact distribution of these fish is not entirely defined, but they have been found in the middle and lower Congo regions, including the Sankuru River drainage area. The discovery of specimens in Lac Fwa, located hundreds of kilometers west of Kinshasa, further highlights the extent of their distribution.