分類 / 名稱
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Teleostei >
Cichliformes (Cichlids, convict blennies)
鱸形目 (Cichlids, convict blennies) >
Cichlidae (Cichlids)
慈鯛科魚類 (Cichlids) > Pseudocrenilabrinae
Etymology: Oreochromis: Latin, aurum = gold + Greek, chromis = a fish, perhaps a perch (Ref. 45335).
環境： 環境 / 氣候帶 / 深度上下限 / 配送範圍
生態學
; 淡水; 半鹹淡水 底中水層性. 熱帶
Africa: Lower part of Pangani River and neighbouring Zigi River in Tazania and Kenya (Ref. 2, 52331, 118630). Introduced in Mlingano dam, south of Pangani River, and probably other dams in coastal zone of Tanzania (Ref. 2, 54836). Also in Lake Rutamba, Lake Nambawala and Lake Mitupa near Lindi in southeast Tanzania (Ref. 118630, 118638).
非洲: 在坦尚尼亞的 Pangani 河流域與附近的 Zigi 河的較下面的部位。
大小 / 重量 / 年齡
成熟度: Lm ? range ? - ? cm
Max length : 16.1 cm SL 雄魚/尚未辨別雌雄; (Ref. 52331)
背棘 (總數) : 16 - 18; 背的軟條 (總數) : 9 - 11; 臀棘: 3 - 4; 臀鰭軟條: 9 - 11; 脊椎骨: 29 - 30. Diagnosis: A small bodied tilapia (Ref. 118638). About 50% of individuals have IV anal spines, the modal numbers of vertebrae (29), dorsal rays (27) and gill-rakers (15) are low, and the jaws of breeding males are enlarged (Ref. 2). Females, subadult males and juveniles with a silver/grey flank colour, light ventral colour, and characteristic melanin pattern of 7-9 broken vertical stripes on the dorsal side giving a spotted appearance; males darker, with a series of white spots/bars on the flanks; ripe males have red margins on dorsal and caudal, with a reddish tinge to the pectoral fins; males from southern populations showed a bluish sheen and less contrasting male colouration (Ref. 118638). In breeding males the throat and chest are black and broad dark vertical bars are conspicuous on the lower half of the body (Ref. 2, 4967, 54096).
Body shape (shape guide): short and / or deep; Cross section: compressed.
繁殖期的雄性的顎增大了。 在雌性與非繁殖期的雄性中，黑色素圖案的水平與垂直要素是顯著的, 尤其在他們的聯接, 在哪裡斑塊時常垂直地被畫出。 在繁殖期的雄性中，咽喉與胸是黑色而寬的黑縱帶在下面一半的身體上是顯著的。
A maternal mouthbrooder (Ref. 118638). There is evidence of hybridization with native Oreochromis jipe in northern Tanzania, and non-native O. niloticus in southern Tanzania (Ref. 118638). Of only minor importance to artisanal fisheries (Ref. 118638). Maximum standard length of 18 cm (Ref. 4967) is not confirmed (Ref. 2, G.F. Turner pers. comm.); maximum total length reported as 20.8 cm (Ref. 2, 118638).
棲息於河。 (參考文獻 4967)
生命週期和交配行為
成熟度 | 繁殖 | 產卵場 | 卵 | 孕卵數 | 仔魚
A maternal mouthbrooder (Ref. 118638).非洲: 在坦尚尼亞的 Pangani 河流域與附近的 Zigi 河的較下面的部位。
Trewavas, E., 1983. Tilapiine fishes of the genera Sarotherodon, Oreochromis and Danakilia. British Mus. Nat. Hist., London, UK. 583 p. (Ref. 2)
IUCN 瀕危狀態 (Ref. 130435: Version 2025-2 (Global))
無危 (LC) ; Date assessed: 31 January 2006
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基於模型的估計
系統發育多樣性指數 (參考文獻
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01905 (0.00846 - 0.04293), b=3.01 (2.82 - 3.20), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
營養階層 (參考文獻
69278): 3.2 ±0.40 se; based on food items.
回復力 (參考文獻
120179): 高度, 族群倍增時間少於 15個月 (Preliminary K or Fecundity.).
釣魚的脆弱性 (Ref.
59153): Low vulnerability (10 of 100).
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