The pindu (''Stomatepia pindu'') is a critically endangered species of

cichlid Cichlids are fish from the family Cichlidae in the order Cichliformes. Cichlids were traditionally classed in a suborder, the Labroidei, along with the wrasses ( Labridae), in the order Perciformes, but molecular studies have contradicted this ...

endemic Endemism is the state of a species being found in a single defined geographic location, such as an island, state, nation, country or other defined zone; organisms that are indigenous to a place are not endemic to it if they are also found elsew ...

Lake Barombi Mbo Lake Barombi Mbo or Barombi-ma-Mbu is a lake near Kumba in the Southwest Region of Cameroon. It is located in the Cameroon volcanic chain, and is the largest volcanic lake in this region. It is one of the oldest radiocarbon-dated lakes in Afri ...

in western

Cameroon Cameroon (; french: Cameroun, ff, Kamerun), officially the Republic of Cameroon (french: République du Cameroun, links=no), is a country in west-central Africa. It is bordered by Nigeria to the west and north; Chad to the northeast; the C ...

Description

The normal coloration of the pindu is solid black, lightening when breeding and even more so if stressed. Both sexes are similar in colour. The body is elongated with a pointed head and nose with a relatively large mouth. It is a relatively robust with a body depth of 30.0-37.0% of its length. The lateral line system on the head is markedly enlarged and a series of dark blotches along the sides is often marked. The maximum size for males is 9.1 cm.

Distribution and habitat

It is endemic to Lake Barombi Mbo, a volcanic crater lake with a diameter of just 3 miles in western Cameroon where only the top 40 metres contains acceptable oxygen levels to harbor vertebrate life.

Habits

It is a

predator Predation is a biological interaction where one organism, the predator, kills and eats another organism, its prey. It is one of a family of common feeding behaviours that includes parasitism and micropredation (which usually do not kill th ...

y fish and reportedly is also a

kleptoparasite Kleptoparasitism (etymologically, parasitism by theft) is a form of feeding in which one animal deliberately takes food from another. The strategy is evolutionarily stable when stealing is less costly than direct feeding, which can mean when fo ...

on the freshwater crab '' Potamon africanus''. The spawning of the pindu is a rather simple process, a pair of fish leave the main school to spawn directly on to the substrate. They do not construct any sort of scrape or nest and the female lays the eggs, the male to fertilises them and then the females picks them up in her mouth where they are retained for 3–4 weeks.

Threats

It is threatened because of

pollution Pollution is the introduction of contaminants into the natural environment that cause adverse change. Pollution can take the form of any substance (solid, liquid, or gas) or energy (such as radioactivity, heat, sound, or light). Pollutants, the ...

and

sedimentation Sedimentation is the deposition of sediments. It takes place when particles in suspension settle out of the fluid in which they are entrained and come to rest against a barrier. This is due to their motion through the fluid in response to the ...

due to human activities. It is potentially also threatened by large emissions of

carbon dioxide Carbon dioxide (chemical formula ) is a chemical compound made up of molecules that each have one carbon atom covalently double bonded to two oxygen atoms. It is found in the gas state at room temperature. In the air, carbon dioxide is transpar ...

(CO₂) from the lake's bottom (compare

Lake Nyos Lake Nyos ( ) is a crater lake in the Region of Cameroon, located about northwest of Yaoundé, the capital. Nyos is a deep lake high on the flank of an inactive volcano in the Oku volcanic plain along the Cameroon line of volcanic activity ...

), although studies indicate that Barombo Mbo lacks excess amounts of this gas.Freeth, S.J.; C.O. Ofoegbu; and K.M. Onuoha (1992). Natural Hazards in West and Central Africa, pp. 50—51. As well as water abstraction to supply the growing town of Kumba and the introduction of non-native species. However, at the moment, there are no introduced fish species on Lake Barombi Mbo and commercial fishing is banned.

References

External links

Photograph
{{Taxonbar, from=Q1940170 Endemic fauna of Cameroon Stomatepia Cichlid fish of Africa Fish described in 1972 Taxonomy articles created by Polbot