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); trewavasae: Named in honour of Dr. Ethelwynn Trewavas, who worked on cichlid taxonomy from the late 1920s until her death in 1993; considered the founding "mother" of Malawi cichlid taxonomy (Ref. 55898).
Eponymy: Dr Ethelwynn Trewavas (1900–1993) was an eminent British ichthyologist. [...] (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 50 - 70 m (Ref. 55898). 热带
Africa: endemic to Lake Malawi, present in the southeastern arm of the lake in Malawi (Ref. 55898).
非洲: 马拉威湖。
大小 / 重量 / 年龄
Maturity: Lm ? range ? - ? cm
Max length : 6.5 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; 背的软条 (总数) : 10; 臀棘: 3; 臀鳍软条: 8 - 9. Diagnosis: head length 35.4-36.4 %SL; snout length 30.0-33.3 % head length; lower jaw length 40.0-41.3 % head length; premaxillary pedicel length 34.0-35.6 % head length; lachrymal 18.2-19.6 % head length; eye diameter 35.3-36.1 % head length; interorbital width 17.8-20.0 % head length; 21-24 gill-rakers on lower limb of first arch; predorsal distance 37.7-39.1 %SL (Ref. 55898).
鉴别: 头长 35.4-36.4% SL; 吻的长度 30.0-33.3% 头长; 下颌长度 40.0-41.3% 头长; 上颌骨前的茎长度 34.0-35.6% 头长; 泪骨 18.2-19.6% 头长; 眼直径 35.3-36.1% 头长; 眼间骨宽度 17.8-20.0% 头长; 在第一鳃弓的下肢上的 21-24个鳃耙; 前背的距离 37.7-39.1% SL.(参考文献 55898)
描述: 身体背部轮廓更强烈中凸超过腹的身体轮廓; 几乎笔直地在一些标本的腹面身体轮廓; 头部背面轮廓笔直地在眼之下; 吻中等長度的﹐尖的與有角的; 嘴大的; 口裂於大約 20個 ° 傾向到水平的; 顎骨延伸超過垂直的在眼的前緣; 外部的口部齒小的, 混合的雙尖, 三尖瓣或肩負了三尖瓣,前面地靠攏在一起, 變成單犬齒而且更廣泛在後部地設定; 內部的口部齒肩負了三尖瓣; 在頰上的 2-3個成列的鱗片; 碰觸頭部背面輪廓的眼的上緣; 在外形上的低咽的頜正常; 所有的咽齒細的; 在下肢上的鰓耙長且細的.(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 6個模糊的縱帶; 所有的鰭灰白的; 背鰭有一些模糊的斑點; 斑點合併成斜紋了軟的之上背部的.(參考文獻 55898) 成熟的雄魚: 深色的吻，唇，下巴與腹面; 背鰭有灰色的基底，細的白色靠近邊緣的條紋與深色的垂部與頂端; 寬的深色斜紋在軟的背部; 臀鰭深色的; 對腹鰭的深色前緣.(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: 马拉威湖。
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
工具
特别资料
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网络资源
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=0.01445 (0.00674 - 0.03099), b=2.99 (2.82 - 3.16), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
营养阶层 (Ref.
69278): 3.2 ±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).
