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Cichliformes (Cichlids, convict blennies) >
Cichlidae (Cichlids) > Pseudocrenilabrinae
Etymology: Hemichromis: Greek, hemis = half + Greek, chromis = a fish, perhaps a perch (Ref. 45335); camerounensis: The specific name refers to the country "Cameroun" or "Cameroon" where the species was discovered and found to be common in the major coastal Atlantic river systems (Ref. 123791).
Environment: milieu / climate zone / depth range / distribution range
Sinh thái học
; Nước ngọt Tầng nổi. Tropical
Africa: coastal basins of Cameroon and south-eastern Nigeria, from Cross River to Lobe River (Ref. 123791). Also in upper Chad basin in Cameroon (Ref. 123791).
Bộ gần gũi / Khối lượng (Trọng lượng) / Age
Maturity: Lm ? range ? - ? cm
Max length : 14.6 cm SL con đực/không giới tính; (Ref. 123791)
Short description
Hình thái học | Sinh trắc học
Các tia vây lưng cứng (tổng cộng): 14 - 15; Các vây lưng mềm (tổng cộng): 10-12; Tia mềm vây hậu môn: 8 - 11. Diagnosis: Live or freshly caught specimens of Hemichromis camerounensis can be distinguished from H. fasciatus by the two distinct red opercular spots on either side of the single large black opercular spot while there is no or just one red spot present in the latter species; it can be further distinguished from H. fasciatus by a combination of overlapping morphometrics: a low number of dorsal fin soft rays, 10-12 vs. 11-14; few cheek row scales, 3-5 vs. 5-7; low number of longitudinal line scales, 28-30 vs. 29-32; a shallow cheek, 20.0-31.4% of head length vs. 21.6-34.0%; short snout, 27.2-35.2% of head length vs. 27.4-36.4%; large eyes, 22.4-32.5% of head length vs. 19.7-27.2%; broad interorbital region and head, respectively 24.3-31.1% and 40.8-48.3% of head length vs. 23.0-30.1% and 39.0-46.6%; in addition, the lower pharyngeal jaw in H. camerounensis is more V-shaped with a dentigerous area more long than that of H. fasciatus which is more Y-shaped with a dentigerous area less long (Ref. 123791). Hemichromis camerounensis can be distinguished from H. elongatus by the two distinct red opercular spots on either side of the single large black opercular spot in live or freshly-caught specimens while in H. elongatus there is one red spot or a mixture of reddish and yellowish spots above the large black opercular spot; the ventral parts of the body and head of H. camerounensis are variable in colour and vary from dark to white sometimes reddish, while a homogeneous red colour is present on the ventral parts of the body and head in adults of H. elongatus; it can further be distinguished from H. elongatus by a combination of overlapping morphometrics, mainly by a low number of dorsal fin soft rays, 10-12 vs. 11-13; high number of upper transverse line scales, 3-5 vs. 3-4.5; low number of pectoral to pelvic fins row scales, 4-6 vs. 4-7; a short premaxillary pedicel, 39.1-48.8% of head length vs. 38.0-51.2%; broad interorbital region, 24.3-31.1% of head length vs. 21.8-30.4%; short head, 33.1-38.7% of standard length vs. 34.2-40.3%; short predorsal, prepectoral and prepelvic distances, respectively 33.8-39.0%, 34.3-42.7% and 37.6-43.7% of standard length vs. 34.3-41.3%, 35.1-42.3% and 38.2-48.1%; long dorsal and anal fin bases, respectively 50.8-57.3% and 13.7-18.4% of standard length vs. 48.1-56.8% and 12.8-18.2%; the posterior margin of this pharyngeal bone in H. camerounensis is noticeably less concave and wider than that of H. elongatus and it comprises on average fewer teeth, 16-24 vs. 19-26 (Ref. 123791).
Life cycle and mating behavior
Chín muồi sinh dục | Sự tái sinh sản | Đẻ trứng | Các trứng | Sự sinh sản | Ấu trùng
Bitja-Nyom, A.R., J.-F. Agnèse, A. Pariselle, C.F. Bilong-Bilong, A. Gilles and J. Snoeks, 2021. A systematic revision of the five-spotted Hemichromis complex (Cichliformes: Cichlidae) from West Africa and Lower Guinea, with the description of a new species from Cameroon. Hydrobiologia 848:3779-3803. (Ref. 123791)
IUCN Red List Status (Ref. 130435)
Threat to humans
Harmless
Human uses
Thêm thông tin
Tên thường gặpCác synonym ( Các tên trùng)Trao đổi chấtCác động vật ăn mồiĐộc học sinh tháiSự tái sinh sảnChín muồi sinh dụcĐẻ trứngTổng số cá thể đẻ trứngSự sinh sảnCác trứngEgg development
Age/SizeSự sinh trưởngLength-weightLength-lengthLength-frequenciesSinh trắc họcHình thái họcẤu trùngSự biến động ấu trùngBổ xungSự phong phúBRUVS
Các tài liệu tham khảoNuôi trồng thủy sảnTổng quan nuôi trồng thủy sảnCác giốngDi truyềnElectrophoresesDi sảnCác bệnhChế biếnNutrientsMass conversion
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Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = No PD50 data [Uniqueness, from 0.5 = low to 2.0 = high].
Mức dinh dưỡng (Ref.
69278): 3.4 ±0.5 se; based on size and trophs of closest relatives
Thích nghi nhanh (Ref.
120179): Chiêù cao, thời gian nhân đôi của chủng quần tối thiểu là dưới 15 tháng (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
