| 词条 | Copadichromis geertsi |
| 释义 |
| image = | status = LC | status_system = IUCN3.1 | status_ref = [1] | taxon = Copadichromis geertsi | authority = Konings, 1999 | synonyms = }} Copadichromis geertsi is a species of haplochromine cichlid which is endemic to Lake Malawi. DescriptionCopadichromis geertsi is a small to medium-sized cichlid, growing to a standard length of {{convert|12.8|cm|in}}, which shows two, occasionally just one, clear spots on the sides. The males are dark in colour with the upper body varying from light blue to yellow towards the head and on the dorsal fin. It can be distinguished from other members of the genus Copadichromis by the two spots, the colour of the breeding males being black with a pale blue to yellow flash on its head and back. The females and non-breeding males do not have the yellow colour in the anal fin seen females and non breeding males of the otherwise similar Copadichromis pleurostigmoides[2] and they are grey in colour with two black spots.[3]DistributionCopadichromis geertsi is endemic to Lake Malawi along the eastern shore from the Nsinje River in Malawi) north as far as Thundu in Mozambique. It has only been recorded from four sites.[1]Habitat and ecologyCopadichromis geertsi is found in areas of softer substrates mixed with rocks at depths ranging between {{convert|25–50|m|ft}}, and is only occasionally recorded at depths shallower than {{convert|25|m|ft}}. The females are sometimes found foraging in groups in open water and single individual females will move between the territories held by the breeding males. This species feeds on small items that it takes from the water column.[1]The breeding males excavate cave crater spawning sites in the mixed habitat below {{convert|25|m|ft}}.[1] The spawning site is normally dug out from under and adjacent a rock and has a diameter of {{convert|50-200|cm|in}}. The territorial male digs out the sand from underneath the rock, piling it up and using it to construct a semicircular wall which surrounds the spawning site. The breeding males normally space their spawning sites {{convert|4|m|ft}} from each other.[3] After the females have mated they mouthbrood the fertilised eggs for 30–36 days[4] and when they are ready they move into shallow water where join the schools of juvenile utaka which are frequently found above nests of kampango (Bagrus meridionalis), where they release the free swimming fry.[1] Human usageCopadichromis geertsi is found in the aquarium trade, where it is sometimes called "Virginialis blotch".[2] They have been bred in captivity but wild caught adults are still available.[4] Overfishing using open-water seine nets, of a type called "chirimila nets" in Lake Malawi, is potentially a threat to this species.[1]EtymologyThis species was named in 1999 by the Dutch ichthyologist and cichlid specialist Ad Konings,[5] in its specific name he honours Martin Geerts of the Dutch Cichlid Association in recognition of his scientific knowledge of cichlids and for the support he gave to Konings during a number of expeditions to Lakes Malawi and Tanganyika.[6] References1. ^1 2 3 4 5 {{cite iucn | author = Konings, A. | year = 2018 | title = Copadichromis geertsi| journal = The IUCN Red List of Threatened Species | volume = 2018 | page = e.T60865A47219242| url = https://dx.doi.org/10.2305/IUCN.UK.2018-2.RLTS.T60865A47219242.en | accessdate = 3 December 2018}} {{Taxonbar|from=Q3318849}}2. ^1 {{cite web | url = https://malawicichlids.com/mw08021b.htm | title = Copadichromis geertsi | accessdate = 2 December 2018 | work = Malawi Cichlids | publisher = M. K. Oliver | year = 2002 | author = M.K. Oliver PhD}} 3. ^{{FishBase|Copadichromis|geertsi|month=June|year=2018}} 4. ^1 2 {{cite web | url = https://www.gcca.net/art-pics/cichlid-profiles-list/malawi-cichlids/58-copadichromis-geertsi#.XATxD_Z2sbo | title = Malawi Cichlids Copadichromis geertsi | date = May 2008 | accessdate = 3 December 2018 | publisher = Greater Chicago Cichlid Association}} 5. ^{{Cof record|spid=65285|title=Copadichromis geertsi|access-date = 3 December 2018}} 6. ^{{cite web | url = http://www.etyfish.org/cichlidae2/ | title = Order CICHLIFORMES: Family CICHLIDAE: Subfamily PSEUDOCRENILABRINAE (a-g) | accessdate= 3 December 2018 | author1 = Christopher Scharpf | author2 = Kenneth J. Lazara | last-author-amp = yes | work = The ETYFish Project Fish Name Etymology Database | publisher = Christopher Scharpf and Kenneth J. Lazara | date = 22 July 2018}} 7 : Copadichromis|Taxa named by Ad Konings|Fish described in 1999|Taxonomy articles created by Polbot|Fish of Lake Malawi|Fish of Malawi|Fish of Mozambique |
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