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Pelvicachromis pulcher

Pelvicachromis pulcher
Kribensis Cichlid
Pelvicachromis pulcher is a freshwater fish of the cichlid family, endemic to Nigeria and Cameroon. The species is popular amongst aquarium hobbyists, and is most commonly sold under the name kribensis, although the species has other common names, including various derivatives of kribensis: krib, common krib and rainbow krib, along with rainbow cichlid and purple cichlid. Originally P. kribensis, its scientific name was changed to P. pulcher. Pulcher is Latin for "beautiful". The species is a popular cichlid for the aquarium.In the wild, male P. pulcher grow to a maximum length of approximately 12.5 centimetres and a maximum weight of 9.5 grams . Females are smaller and deeper bodied, growing to a maximum length of 8.1 cm and a maximum weight of 9.4 g Both sexes have a dark longitudinal stripe that runs from the caudal fin to the mouth and pink to red abdomens, the intensity of which changes during courtship and breeding. The dorsal and caudal fins also may bear gold-ringed eye spots or ocelli. Males show colour polymorphisms in some populations collected at single localities. Juveniles are monomorphic until approximately six months of age. Pelvicachromis pulcher is native to southern Nigeria and to coastal areas of Cameroon, where it occurs in warm , acidic to neutral , soft water. 
The species inhabits both slow and fast-moving water, though it is only found where patches of dense vegetation are available. Other fish that share the habitat of P. pulcher include other Pelvicachromis species (Pelvicachromis taeniatus), other cichlid species (Chromidotilapia guntheri, Hemichromis cristatus and H. fasciatus, Tilapia mariae and T. zilli) along with Brycinus longipinnis and Aphyosemion species. The species is prey for a number of rheophilic predators including Hepsetus odoe, Hydrocynus forskahlii, and Lates niloticus (Nile perch). In the natural habitat, P. pulcher have been observed excavating, defending, and sheltering in caves dug underneath plants, and these holes are also used for breeding. Not all P. pulcher, however, claim territories and many live in large, non-reproductive aggregates. Pelvicachromis pulcher is a popular cichlid for the aquarium. The species should be housed in minimum volumes of 80–90 litres. Fine gravel should be used as a substrate, as the species likes to burrow and to excavate caves. Quartzitic substrates should be avoided as they interfere with larval development and may cause fry mortality. The aquarium should mimic the natural environment, and should be decorated with numerous caves, plants and hiding places. Dither fish are useful in reducing the innate shyness of the species. The species is an unfussy feeder and will accept a range of prepared foods. They spawn readily in captivity and will accept artificial caves as substitutes for the holes used for spawning in the wild. Although tolerant of a range of water chemistries, the species has a preference for, and is more likely to breed when, maintained in soft, acidic water.

一般成鱼体长8-12公分 红肚凤凰可以说是西非短鲷的代表品种,它拥有细长的身体,鱼背部分呈蓝色,鳃盖在灯光反射下呈现金属色泽的蓝光,极为耀眼。红肚凤凰的腹部略带红晕,因而得名。红肚凤凰性格温和,偏爱动物性饵料,对水质没有特殊要求,环境适应能力极强。红肚凤凰喜欢在砂砾层上掘洞躲藏,却不会伤及周围种植的水草,是一种明显带有穴居特性的底栖鱼类,所以,在饲养红肚凤凰的时候。最好在水族箱中放置一些只剩下纤维的椰壳或者小花盆、小瓦瓮之类的物件,供它们栖息、躲藏,也是它们产卵繁殖的安全场所。