分類 / Names
俗名 | 同種異名 | Catalog of Fishes(屬, 種) | ITIS | CoL | WoRMS | Cloffa
Teleostei >
Cichliformes (Cichlids, convict blennies)
鱸形目 (Cichlids, convict blennies) >
Cichlidae (Cichlids)
慈鯛科魚類 (Cichlids) > Pseudocrenilabrinae
Etymology: Sarotherodon: Greek, saros, -ou = sawdust + Greek, ther = animal * Greek, odous = teeth (Ref. 45335).
Eponymy: Gunnar Linnell was a Swedish plantation owner in Cameroon, who was Lönnberg’s friend. He sent a collection of fishes and crustaceans from that country, including the type of this cichlid. (Ref. 128868), visit book page.
More on author: Lönnberg.
Environment: milieu / climate zone / depth range / distribution range
生態學
; 淡水 居於水底的. 熱帶; 24°C - 26°C (Ref. 13614); 5°N - 4°N
Africa: endemic to Lake Barombi Mbo, West Cameroon (Ref. 4999, 52307, 81260).
非洲: 湖 Barombi Mbo ，喀麥隆西方部的特有種。
大小 / 重量 / 年齡
Maturity: Lm ? range ? - ? cm
Max length : 18.5 cm SL 雄魚/尚未辨別雌雄; (Ref. 81260)
簡短描述
檢索表 | 型態特徵 | 形態測量圖
背棘 (總數) : 14 - 16; 背的軟條 (總數) : 10 - 12; 臀棘: 3; 臀鰭軟條: 8 - 11; 脊椎骨: 29. Diagnosis: 15-20 rakers on lower limb of first arch; 30-32 scales in lateral line (Ref. 81260). Body dark grey or green (Ref. 2, 81260). Head large, especially in adults (Ref. 2), its length 37-45% of standard length (Ref. 81260). Jaw teeth very small (Ref. 81260). Breeding males green; intense tilapia-mark present in young until about 10 cm SL, absent above 15 cm SL; as the gonads mature the lower parts of the head and the flanks become more metallic and green; most brooding females silver grey in general color; fins mainly of a neutral color; pelvic fins may be yellow (Ref. 2).
最顯著的特徵是大的頭部尤其當成魚時。 繁殖期的雄性綠色。 一個密集吳郭魚-標誌直到大約 10 公分 SL 出現在幼魚, 不存在上方 15 公分 SL。 當生殖腺成熟頭部的下面部份，而且側面變得更金屬和更綠色的。 大多數的繁殖期的雌性銀色的灰色大體上顏色。 鰭中性顏色主要是; 腹鰭可能是黃色。
Occasionally forms schools; is mainly diurnal; juveniles feed on mayfly larvae and various terrestrial insects among a diet in which animal items formed a high proportion (Ref. 2). Adults feed predominantly on phytoplankton (Ref. 2, 52307). Congregates in small groups (under 10 individuals) in open water regions and at a maximum depth of about 5 m (Ref. 52307). Lacks marked sexual dichromatism when sexually active (Ref. 81260). Ovophilic, maternal mouth brooder (Ref. 52307) that forms temporary pair bonds (Ref. 81260) prior to spawning, but none after (Ref. 52307). Ventures to regions near the edges of the lake for spawning, where the male constructs craters in the sand; males infrequently incubate the eggs (Ref. 52307).
偶然地形成魚群; 主要日行性。 存在一個食性稚魚吃孚游類仔魚與各種不同的陸棲昆蟲在那一個動物項目形成一個高的比例了。 成魚主要以浮游植物為食。 (參考文獻 2)
Life cycle and mating behavior
成熟度 | 繁殖 | 產卵場 | 卵 | 孕卵數 | 仔魚
Brooding by both sexes, predominantly by the female. 非洲: 湖 Barombi Mbo ，喀麥隆西方部的特有種。
Trewavas, E. and G.G. Teugels, 1991. Sarotherodon. p. 425-437. In J. Daget, J.-P. Gosse, G.G. Teugels and D.F.E. Thys van den Audenaerde (eds.) Check-list of the freshwater fishes of Africa (CLOFFA). ISNB, Brussels; MRAC, Tervuren; and ORSTOM, Paris. Vol. 4. (Ref. 4999)
IUCN 瀕危狀態 (Ref. 130435: Version 2024-1)
極危 (CR) (B1ab(iii)+2ab(iii)); Date assessed: 16 February 2009
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Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5001 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01862 (0.00830 - 0.04177), 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): 2.6 ±0.26 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 (13 of 100).
