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Placidochromis trewavasae Hanssens, 2004

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Malawi country information

Common names: [No common name]
Occurrence: endemic
Salinity: freshwater
Abundance: | Ref:
Importance: | Ref:
Aquaculture: | Ref:
Regulations: | Ref:
Uses: live export: yes;
Comments: Type locality of the holotype of P. trewavasae: 'Transect Mazinzi Bay-Kadango, SE Arm (Malawi)' (Ref. 55898). Found in the central part of the southeastern arm of Lake Malawi (Ref. 55898). Also Ref. 79521.
National Checklist:
Country Information: https://www.cia.gov/library/publications/resources/the-world-factbook/geos/mi.html
National Fisheries Authority: http://isp.msu.edu/AfricanStudies/Plea/mfri.htm
Occurrences: Occurrences Point map
Main Ref: Hanssens, M., 2004
National Database:

Common names from other countries

分类 / Names 俗名 | 同种异名 | Catalog of Fishes(, ) | 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).

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

分布 国家 | FAO区域 | 生态系 | 标本纪录 | Point map | 简介 | Faunafri

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)

生物学特性     字汇 (例如 epibenthic)


Life cycle and mating behavior Maturities | 繁殖 | Spawnings | Egg(s) | Fecundities | 仔鱼

非洲: 马拉威湖。

主要参考文献 Upload your references | 参考文献 | 合作者 : Kullander, Sven O. | 合作者

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)

  最不相关 (LC) ; Date assessed: 20 June 2018

CITES (Ref. 128078)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

对人类的威胁

  无害处的




人类利用

FAO(Publication : search) | FishSource |

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特别资料

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网络资源

Aquatic Commons | BHL | Cloffa | Websites from users | 核实 FishWatcher | CISTI | Catalog of Fishes(, ) | DiscoverLife | ECOTOX | Faunafri | Fishtrace | GenBank(基因组, 核苷酸) | GloBI | GOBASE | | Google Books | Google Scholar | Google | IGFA World Record | MitoFish | Otolith Atlas of Taiwan Fishes | PubMed | Reef Life Survey | Scirus | SeaLifeBase | 树状分类阶层 | Wikipedia(转至, 搜寻) | World Records Freshwater Fishing | Zoobank | 动物学的记录

Estimates based on models

Phylogenetic diversity index (Ref. 82804):  PD50 = 0.5000   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01514 (0.00700 - 0.03275), b=2.97 (2.80 - 3.14), 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).