Hingemouth (Phractolaemus ansorgii) fish species and information / pictures of Hingemouth - Phractolaemus ansorgii

Hingemouth (Phractolaemus ansorgii) fish species information

Scientific Name
Phractolaemus ansorgii

Common Name
Hingemouth

Biology
Dorsal spines : 0; Dorsal soft rays : 6; Anal spines: 0; Anal soft rays: 6. Bony head. Nasal openings: 1 tubules, 2 semi-circle behind tubules. Narrow gill opening. Dorsal and anal with 2 simple and 4 branched rays. Skeletal formula: 3.5/35-38/4.5:3.5:16 sexual dimorphism at 210 cm TL: males with 4 large tubercles around eye and spinules on caudal peduncle. Paired fins tinted with red.

Classification

Classified By

Boulenger, 1901

Class

Ray-finned fishes (Actinopterygii)

Order

Milkfish (Gonorynchiformes)

Family

Hingemouths (Phractolaemidae)

Distribution

Region

Africa

Distribution

Africa: restricted distribution, from Niger Delta to Lake Nokou? and Congo River basin.

Range

Unknown

Environment

Climate

Tropical

Water Temperature From

25 °C

Water Temperature To

30 °C

Depth From - meters

Unknown m

Depth To - meters

Unknown m

Zone

benthopelagic

Environment

Freshwater; ; pH range: 6.0 - 8.0; dH range: ? - 25 benthopelagic

Trophic Level

2.37 s.e. 0.29 Based on diet studies.

Occurs in Marine / Salt water

False

Occurs in Brackish water

False

Occurs in Fresh Water

True

Occurs on Reefs

False

Is kept in Aquariums

False

Physical Size and Genetics

Maximum Length

19.0 cm

Common Length

Unknown cm

Phylogenetic Diversity Index

PD50 = 1.5000 many relatives (e.g. carps) 0.5 - 2.0 few relatives (e.g. lungfishes)

Human Uses and Population

Human Uses

Unknown

Vulnerability

Low vulnerability (10 of 100)

Resilience

Unknown

Threat To Humans

Harmless

IUCN Red List Status

Least Concern (LC)