Cape kurper

What it is

The Cape kurper is a member of the Anabantidae family, often called climbing gouramis. This species reaches lengths of 25 cm and weighs up to 200 g. Its body displays yellow to golden brown hues with dark markings on the upper side. These marks extend onto the dorsal and anal fins. Males exhibit brighter colours than females. The fish is adapted to various freshwater environments within its limited range.

Where it lives

This fish is endemic to South Africa, specifically the Western and Eastern Cape provinces. It inhabits coastal rivers stretching from the Coega River in Algoa Bay north to the Verlorevlei River. Populations have also been introduced into the Clanwilliam Olifants River system. The species thrives in diverse habitats, ranging from rocky, fast-flowing streams to slow, heavily vegetated waters. It prefers quiet marginal areas with shelter among rocks, roots, or aquatic plants.

How it lives

Cape kurpers are opportunistic feeders. Their diet consists of insects, other invertebrates, small fish, and crabs. They show adaptability in their habitat choices but favour sheltered spots. When caught by anglers, they may play dead to escape once the hook is removed. This behaviour helps them survive predation attempts and handling by humans. They are active hunters in their local ecosystems.

Breeding and life cycle

Breeding occurs during the southern summer. The male selects a site on the substrate and defends it aggressively against rivals. He develops dark vertical bars and black fins during this period. Courtship involves bubble blowing and vigorous chasing. After the female lays adhesive eggs, the male fertilises them. He then chases the female away and takes sole responsibility for guarding the eggs and young fry, which also stick to the substrate.

Fish and people

Anglers encounter this species in its native rivers. It is noted for its trick of playing dead when caught, allowing it to slip from hands once unhooked. While not a major food source, it is part of the local angling experience. Its unique breeding behaviour and adaptation to local rivers make it a subject of interest for naturalists and fishermen in the Cape regions.

Status and threats

The Cape kurper faces threats from introduced predatory fish. Largemouth, smallmouth, and spotted bass have been released into many waters where the kurper lives. These invasive species compete with and prey on the native fish. Additional pressures include damming of rivers, pollution, and climatic changes. Genetic studies suggest there may be more than one species within the current classification, indicating a need for further research.

Questions people ask about Cape kurper

Good reading and sources

• Cape kurper on WikipediaEncyclopedia
• More photos on Wikimedia CommonsPhotos
• Wikidata recordOpen data