Cockatoo dwarf cichlid

What it is

This small cichlid features a long body of moderate height and a large mouth with thick lips. Males grow up to eight centimetres, while females remain smaller at five centimetres. The male displays vivid red or orange dorsal and tail fins, with the first few rays elongated significantly. Females are generally duller with a pale yellow background and a distinct black lateral line, though they brighten during breeding. Both sexes share a dark stripe running from the eye to the gill cover.

Where it lives

Native to the Amazon River basin, this species inhabits tributaries of the Ucayali, Amazon, and Solimões rivers. Its distribution extends from the Pachitea River to Tabatinga, covering parts of Peru and Colombia. The fish prefers shallow streams and lagoon-like waters within the rainforest. These habitats typically feature leaf-littered bottoms that provide essential hiding spots. Water temperatures in these natural environments range between twenty-four and twenty-eight degrees Celsius.

How it lives

Males are highly territorial and defend specific areas against rivals. Submissive males may adopt a strategy of mimicking female appearance and behaviour to sneak past dominant males and mate. If the dominant male dies, the submissive individual develops full male colouration and finnage. In captivity, they require peaceful tankmates such as tetras. Fast-swimming species should be avoided as they may eat the young. Females also defend territories, especially when caring for broods.

Breeding and life cycle

Females lay salmon-coloured eggs on the roof of a cavity or beneath a leaf. She alone tends to the eggs and fry, while the male guards the wider territory. This species exhibits sneaker male behaviour, where subordinate males mimic females to gain mating opportunities. Successful breeding in community tanks requires careful selection of tankmates to protect the fry. A single female defends a radius of about thirty centimetres during brood care.

Fish and people

This is the most commonly bred Apistogramma species in captivity and suits planted aquariums well. Keepers should house them in pairs, trios, or harems to manage male aggression. Large tanks with ample wood, plants, and caves allow multiple males to coexist by providing sufficient territory. Unlike many South American dwarf cichlids, they tolerate alkaline water with a pH up to eight. Small tanks under one hundred and twenty litres are unsuitable for groups.

Relatives and look-alikes

It belongs to the genus Apistogramma, which includes other dwarf cichlids. It is often compared to similar small cichlids but is distinguished by its specific fin structure and colour patterns.

Questions people ask about Cockatoo dwarf cichlid

Good reading and sources

• Apistogramma cacatuoides on WikipediaEncyclopedia
• More photos on Wikimedia CommonsPhotos
• Wikidata recordOpen data