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Red top williamsi (Pseudotropheus williamsi) fish species and information / pictures of Red top williamsi - Pseudotropheus williamsi

Red top williamsi (Pseudotropheus williamsi) fish species information

Scientific Name
Pseudotropheus williamsi

Common Name
Red top williamsi

Biology
Dorsal spines (total): 17; Dorsal soft rays (total): 8; Anal spines: 3; Anal soft rays: 8. No acutely sloped ethmovomerine block. Lower jaw parallel to a line from the tip of the snout to the hypural plate. Head depth 102% HL); eyes large, vertical eye diameter 25.5% (Ref. 41512).

Classification

Classified By

G?nther, 1894

Class

Ray-finned fishes (Actinopterygii)

Order

Perch-like fish (Perciformes)

Family

Cichlids (Cichlidae)

Distribution

Region

Africa

Distribution

Africa: Endemic to Lake Malawi. Occurs in Deep Bay, Vua, Nkhata Bay; Likoma, Chisumulu, Mbenji and Maleri Islands; the southeast arm of the lake.

Range

9°S - 15°S

Environment

Climate

Tropical

Water Temperature From

24 °C

Water Temperature To

26 °C

Depth From - meters

Unknown m

Depth To - meters

Unknown m

Zone

benthopelagic

Environment

Freshwater; ; pH range: 7.8 - 8.3; dH range: 10 - 20 benthopelagic

Trophic Level

3.37 s.e. 0.41 Based on food items.

Occurs in Marine / Salt water

False

Occurs in Brackish water

False

Occurs in Fresh Water

True

Occurs on Reefs

False

Is kept in Aquariums

True

Physical Size and Genetics

Maximum Length

16.5 cm

Common Length

Unknown cm

Phylogenetic Diversity Index

PD50 = 0.5000 many relatives (e.g. carps) 0.5 - 2.0 few relatives (e.g. lungfishes)

Human Uses and Population

Human Uses

Aquarium: commercial

Vulnerability

Low vulnerability (19 of 100)

Resilience

High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.)

Threat To Humans

Harmless

IUCN Red List Status

Least Concern (LC)