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); borealis: From the Latin "borealis" = northern, named for its occurrence in the extreme north of Lake Malawi (Wissman Bay in Tanzania)(Ref. 55898)..
Environment: milieu / climate zone / depth range / distribution range
生态学
; 淡水 底中水层性; 深度上下限 53 - 61 m (Ref. 55898). 热带
Africa: endemic to Lake Malawi, only known from Wissman Bay in Tanzania (Ref. 55898).
非洲: Wissman 海湾, 在坦尚尼亚的马拉威湖。
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
型态特徵 | 形态测量图
背棘 (总数): 17; 背的软条 (总数): 9; 臀棘 3; 臀鳍软条: 8. Diagnosis: head length 35.7 %SL; snout length 30.4 % head length; snout pointed; lower jaw length 37.4 % head length; outer oral dentition well developed bicuspid; gape inclined at about 20° from horizontal; premaxillary pedicel length 26.5 % head length; cheek depth 22.6 % head length; eye diameter 34.8 % head length; body depth 37.2 %SL (Ref. 55898).
鉴别: 头长 35.7% SL; 吻的长度 30.4% 头长; 吻尖的; 下颌长度 37.4% 头长; 外部的口部生齿发展良好的二头齿; 口裂于大约 20个 ° 倾向从水平的; 上颌骨前的茎长度 26.5% 头长; 颊的深度 22.6% 头长; 眼直径 34.8% 头长; 体高 37.2% SL.(参考文献 55898)
描述: 相当延长种; 身体背部轮廓凸状; 几乎笔直地的腹面身体轮廓; 吻轮廓很直; 嘴中等的; 正好延伸至的颚骨超过垂直的在眼的前缘; 外部的口部齿二头齿; 内部的口部齿三尖瓣; 在颊上的 2 列鱗片; 眼的上緣幾乎碰觸頭部背面輪廓; 低的咽頜矮胖的; 一些中央的咽齒增大了與臼齒型; 在下肢短上的鰓耙.(參考文獻 55898)
體色 保護: 成熟的雄魚: 身體黃褐色的; 在背鰭之下的 7-8 縱帶; 吻與下巴深色的; 背鰭灰色的有狹窄的黑色靠近邊緣的條紋與白色的垂部與頂端; 柔軟背部有深灰色的斑點; 在動脈之間的薄膜上的臀鰭有深灰色的斑點; 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: Wissman 海湾, 在坦尚尼亚的马拉威湖。
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)
人类利用
更多信息
俗名同种异名新陈代谢捕食者生态毒物学繁殖成熟度产卵场产卵群集孕卵数卵卵的发育
年龄范围成长体长-体重体长-体长体长-频率形态测量图型态特徵仔鱼稚鱼动力学入添量丰度BRUVS
参考文献养殖养殖信息品种遗传学Electrophoreses遗传率疾病加工NutrientsMass conversion
合作者照片Stamps, Coins Misc.声音神经毒速度泳型鳃区Otoliths脑重体重比眼睛色素
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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): 3.2 ±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).
