分类 / Names
俗名 | 同种异名 | Catalog of Fishes(属, 种) | ITIS | CoL | WoRMS | Cloffa
Teleostei >
Cichliformes (Cichlids, convict blennies)
鱸形目 (Cichlids, convict blennies) >
Cichlidae (Cichlids)
麗魚科 (Cichlids) > Pseudocrenilabrinae
Etymology: Placidochromis: Latin, placidus = of peaceful or tranquile appearance + Greek, chromis = a fish, perhaps a perch (Ref. 45335); msakae: Named after its type locality, Msaka, Malawi (Ref. 55898).
Eponymy: This is a toponym referring to Msaka, Lake Malawi, Malawi, the type locality. (Ref. 128868), visit book page.
Environment: milieu / climate zone / depth range / distribution range
生态学
; 淡水 底中水层性; 深度上下限 66 - 67 m (Ref. 55898). 热带
Africa: endemic to Lake Malawi, present in the southern part of the lake (Ref. 55898).
非洲: 马拉威。
大小 / 重量 / 年龄
Maturity: Lm ? range ? - ? cm
Max length : 7.9 cm SL 雄鱼/尚未辨别雌雄; (Ref. 55898)
简单描述
检索表 | 型态特徵 | 形态测量图
背棘 (总数) : 15 - 16; 背的软条 (总数) : 10 - 11; 臀棘: 3; 臀鳍软条: 8 - 9. Diagnosis: head length 31.3-34.3 %SL; snout length 28.1-30.6 % head length; snout blunt; lower jaw length 32.9-34.6 % head length; outer oral dentition well developed bicuspid; gape inclined at about 15° to horizontal; premaxillary pedicel length 22.9-27.5 % head length; eye diameter 37.1-39.6 % head length; predorsal distance 34.0-36.4 %SL; dorsal fin base length 53.1-55.2 %SL; body depth 34.5-36.7 %SL (Ref. 55898).
鉴别: 头长 31.3-34.3% SL; 吻的长度 28.1-30.6% 头长; 吻钝的; 下颌长度 32.9-34.6% 头长; 外部的口部生齿发展良好的二头齿; 口裂于大约 15个 ° 倾向到水平的; 上颌骨前的茎长度 22.9-27.5% 头长; 眼直径 37.1-39.6% 头长; 前背的距离 34.0-36.4% SL; 背鳍基底长度 53.1-55.2% SL; 体高 34.5-36.7% SL.(参考文献 55898)
描述: 相当延长种; 身体背部轮廓更强烈中凸超过腹的身体轮廓; 头部小的; 吻短與鈍的; 嘴中等的; 顎骨正好延伸超過垂直的在眼的前緣; 外部的口部齒二頭齒, 在後部地變成單犬齒; 內部的口部齒三尖瓣; 在頰上的 2-3個成列的鱗片; 眼大的; 碰觸頭部背面輪廓的眼的上緣; 低的咽頜細長的; 所有的咽齒小而細長的; 在下肢上的鰓耙相當長且細的.(參考文獻 55898)
體色 保護: 雌性與不成熟的雄性: 身體灰白的黃褐色的; 在背鰭之下的 7個縱帶, 只有看得見的在身體的背部部份上; 吻深色的; 背鰭灰色的; 模糊的灰色斜紋軟的之上背部的; 所有的其他鰭灰白的.(參考文獻 55898) 成熟的雄魚: 身體比較深色的; 吻，下巴與腹面深色的; 背鰭灰色的, 有薄的模糊靠近邊緣的條紋與白色的頂端; 柔軟背部有灰色的斜紋與深色的蔓延邊緣; 尾鰭白灰色; 臀鰭與腹鰭鰭有黑色的前緣。 (參考文獻 55898)
Life cycle and mating behavior
成熟度 | 繁殖 | 产卵场 | 卵 | 孕卵数 | 仔鱼
非洲: 马拉威。
Hanssens, M., 2004. The deep-water Placidochromis species. p. 104-197. In J. Snoeks (ed.) The cichlid diversity of Lake Malawi/Nyasa/Niassa: identification, distribution and taxonomy. Cichlid Press, El Paso, USA. (Ref. 55898)
世界自然保护联盟红皮书 (Ref. 130435: Version 2024-1)
人类利用
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特别资料
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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=0.01000 (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).
营养阶层 (Ref.
69278): 3.3 ±0.4 se; based on size and trophs of closest relatives
回复力 (Ref.
120179): 高度, 族群倍增时间少于 15个月 (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
