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: Placidochromis: Latin, placidus = of peaceful or tranquile appearance + Greek, chromis = a fish, perhaps a perch (Ref. 45335); hennydaviesae: Named after Henny Davies, wife of Peter Davies, former exporter of aquarium fish from Malawi (Ref. 55898).
Eponymy: Henny Davies was the wife of Peter Davies, a former exporter of aquarium fish from Malawi. The couple left Malawi in the 1970s. The authors wrote that this: “…husband and wife team has made many new aquarium fishes available”. (Also see Peter Davies) (Ref. 128868), visit book page.
Environment: milieu / climate zone / 深度上下限 / distribution range
生態學
; 淡水 居於水底的; 深度上下限 71 - 100 m (Ref. 55898). 熱帶; 12°S - 15°S
Africa: Endemic to Lake Malawi. Occurs in the southern part of the lake.
非洲: 馬拉威湖的特有種。 出現於湖的南部。
大小 / 重量 / 年齡
成熟度: Lm ? range ? - ? cm
Max length : 10.0 cm TL 雄魚/尚未辨別雌雄; (Ref. 4994)
簡短描述
檢索表 | 型態特徵 | 形態測量圖
背棘 (總數) : 14 - 15; 背的軟條 (總數) : 9 - 10; 臀棘: 3; 臀鰭軟條: 8 - 9. Diagnosis: lower jaw length 40.9-46.5 % head length; premaxillary pedicel 26.8-31.3 % head length; body depth 32.8-35.7 %SL; outer oral jaw teeth tricuspid; cheek depth 20.0-23.5 % head length; interorbital width 20.0-22.4 % head length; head width 41.6-44.5 % head length (Ref. 55898).
鑑別: 大的嘴, 下頜長度 40.9-46.5% 頭長; 上頜骨前的莖 26.8-31.3% 頭長; 體高 32.8-35.7% 的標準長度; 外部的口部頜齒三尖瓣; 頰的深度 20.0-23.5% 頭長; 眼間骨寬度 20.0-22.4% 頭長; 頭部寬度 41.6-44.5% 頭長.(參考文獻 55463)
描述: 相當小的具有正常的體型; 腹面身體輪廓些微中凸, 幾乎直的; 頭部相當大的; 吻尖而有角的; 嘴大的; 口裂在超過 20個 ° 傾向了到水平的; 延伸的顎骨越過垂直的在眼的前緣; 眼大的, 碰觸頭部背面輪廓的眼的上緣; 外部的口部齒三尖瓣, 一些單犬齒的在後部地; 內部的口部齒三尖瓣與單犬齒的; 在頰上的 2-3個成列的鱗片; 低的咽頜正常在外形上, 所有的齒小而細長的; 在角鰓骨短的較下面的部位上的鰓耙但是細長的, 在上半部上長且細的, 多數深深地分岔.(參考文獻 55463)
體色 保護了成熟的雄性: 身體黃褐色的; 在背鰭之下的 6個深色的縱帶; 吻，下巴與腹面深色的; 背鰭有寬的灰色條紋, 白色的垂部與頂端; 軟的背鰭有 2 斜角灰色的條紋; 尾鰭有深色的靠近邊緣的; 臀鰭與腹鰭鰭有深色的前緣。 (參考文獻 55463)
Inhabits areas with a muddy floor covered with a thick layer of sedimentary diatoms; feeds on planktonic invertebrates as well as insect larvae found in the substrate (Ref. 5595).
棲息於有被覆蓋著沈渣矽藻的厚層的一個泥濘的底部的區域; 吃浮游性無脊椎動物，以及昆蟲幼生發現於底部了。 (參考文獻 5595)
Life cycle and mating behavior
成熟度 | 繁殖 | 產卵場 | 卵 | 孕卵數 | 仔魚
非洲: 馬拉威湖的特有種。 出現於湖的南部。
Maréchal, C., 1991. Placidochromis. p. 378-380. 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. 4994)
IUCN 瀕危狀態 (Ref. 130435: Version 2025-1)
無危 (LC) ; Date assessed: 20 June 2018
人類使用
漁業: 商業性; 水族館: 商業性
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Estimates based on models
Phylogenetic diversity index (參考文獻
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01000 (0.00244 - 0.04107), b=3.04 (2.81 - 3.27), in cm total length, based on all LWR estimates for this body shape (Ref.
93245).
營養階層 (參考文獻
69278): 3.3 ±0.43 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.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
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