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Placidochromis trewavasae Hanssens, 2004

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drawing shows typical species in Cichlidae.


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

Classification / Names Nombres comunes | Sinónimos | Catalog of Fishes(Género, Especie) | ITIS | CoL | WoRMS | Cloffa

> Cichliformes (Cichlids, convict blennies) > Cichlidae (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 Ecología

; agua dulce bentopelágico; rango de profundidad 50 - 70 m (Ref. 55898).   Tropical

Distribución Países | Áreas FAO | Ecosistemas | Ocurrencias, apariciones | Point map | Introducciones | Faunafri

Africa: endemic to Lake Malawi, present in the southeastern arm of the lake in Malawi (Ref. 55898).

Tamaño / Peso / Age

Maturity: Lm ?  range ? - ? cm
Max length : 6.5 cm SL macho / no sexado; (Ref. 55898)

Short description Claves de identificación | Morfología | Morfometría

Espinas dorsales (total) : 15; Radios blandos dorsales (total) : 10; Espinas anales: 3; Radios blandos anales: 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).

Biología     Glosario (por ej. epibenthic)

Life cycle and mating behavior Maturities | Reproducción | Spawnings | Egg(s) | Fecundities | Larva

Main reference Upload your references | Referencias | Coordinador : Kullander, Sven O. | Colaboradores

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)

IUCN Red List Status (Ref. 130435)

  Least Concern (LC) ; Date assessed: 20 June 2018

CITES (Ref. 128078)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

  Harmless




Human uses

FAO(Publication : search) | FishSource |

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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).
Nivel trófico (Ref. 69278):  3.2   ±0.4 se; based on size and trophs of closest relatives
Resiliencia (Ref. 120179):  Alto, población duplicada en un tiempo mínimo inferior a 15 meses (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref. 59153):  Low vulnerability (10 of 100).