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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).
Environment: milieu / climate zone / depth range / distribution range
生態學
; 淡水 底中水層性. 熱帶
Africa: upper parts of the Congo River (Ref. 54847, 55074), mainly the Upemba region and the Lualaba River to Yangambi and Isangi in the Democratic Republic of Congo (Ref. 5166, 52307).
非洲: 對在剛果河上游上的 Yangambi 與 Isangi 的 Upemba 區域與盧阿拉巴河。 也記錄自坦尚尼亞。 (參考文獻 4967)
大小 / 重量 / 年齡
Maturity: Lm ? range ? - ? cm
Max length : 21.0 cm SL 雄魚/尚未辨別雌雄; (Ref. 2)
背棘 (總數) : 14 - 16; 背的軟條 (總數) : 11 - 13; 臀棘: 3; 臀鰭軟條: 9 - 12; 脊椎骨: 29 - 30. Diagnosis: Oreochromis upembae is a deep-bodied species with a short head, which looks very similar to O. malagarasi (Ref. 52307). It is distinguished by following characters: mature males with a bifid and tuberculate genital papilla, prolonged into a cream-coloured tassel in breeding males, in which the edges of the dorsal and caudal fins are orange-coloured or red; two to four dark blotches mid-laterally from operculum to caudal peduncle and a blotch on top of caudal peduncle, distinctive in that the blotches are rather large and vaguely outlined and persist in adults; caudal fin with dark, narrow, vertical stripes or series of spots, only a little less regular than in O. niloticus; caudal rays rather densely scaled to near edge; caudal peduncle deep; vertebrae 29-30; scales in lateral line series 28-31; dorsal spines XIV-XVI, soft rays 11-13; outer teeth bicuspid, in some fishes becoming unicuspid by wear; lower pharyngeal teeth fine, the tooth area with rounded lateral lobes, the blade 1.15-1.5 times the medial length of the toothed area; lower gill-rakers 20-25; and interorbital width 38.8-43.3% length of head (Ref. 2). Among the tasselled tilapias this most resembles O. malagarasi, which differs in having a less scaly caudal fin, the scales usually confined to the basal parts of the rays, and in lacking the regular dark stripes or series of spots on the caudal; and in O. malagarasi the range of dorsal spines is higher, XVI-XVII (Ref. 2).
繁殖期的雄性有背鰭與尾鰭的邊緣橘色或紅色的。 2-4 大的, 含糊地在尾柄的頂端上從鰓蓋到尾柄與一個斑塊側面中央地輪廓了黑色斑塊。 尾部的鰭條相當濃密地在邊緣的附近覆蓋著鱗片直到了。 深地的尾柄。
A maternal mouthbrooder (Ref. 52307).
Life cycle and mating behavior
Maturities | 繁殖 | Spawnings | Egg(s) | Fecundities | 仔魚
The female broods the young and eggs in the mouth in the shelter of sandbanks in the Congo River at Yangambi (Ref. 2).非洲: 對在剛果河上游上的 Yangambi 與 Isangi 的 Upemba 區域與盧阿拉巴河。 也記錄自坦尚尼亞。 (參考文獻 4967)
Trewavas, E., 1983. Tilapiine fishes of the genera Sarotherodon, Oreochromis and Danakilia. British Mus. Nat. Hist., London, UK. 583 p. (Ref. 2)
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Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01905 (0.00827 - 0.04391), 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 (Ref.
69278): 2.5 ±0.24 se; based on food items.
回復力 (Ref.
120179): 高度, 族群倍增時間少於 15個月 (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (16 of 100).
