Scientific Name
Grammonus opisthodon

Common Name
Bighead brotula

Biology
Two specimens known, one of which was collected from a depth of 22 m.

Classification

Classified By

Smith, 1934

Class

Ray-finned fishes (Actinopterygii)

Order

Cusk eels (Ophidiiformes)

Family

Viviparous brotulas (Bythitidae)

Distribution

Region

Southeast Atlantic

Distribution

Southeast Atlantic: South Africa.

Range

Unknown

Environment

Climate

Subtropical

Water Temperature From

Unknown °C

Water Temperature To

Unknown °C

Depth From - meters

Unknown m

Depth To - meters

22 m

Zone

demersal

Environment

Marine; demersal; depth range ? - 22 m (Ref. 6610)

Trophic Level

3.21 s.e. 0.45 Based on size and trophs of closest relatives

Occurs in Marine / Salt water

True

Occurs in Brackish water

False

Occurs in Fresh Water

False

Occurs on Reefs

False

Is kept in Aquariums

False

Physical Size and Genetics

Maximum Length

5.0 cm

Common Length

Unknown cm

Phylogenetic Diversity Index

PD50 = 0.5005 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

Low, minimum population doubling time 4.5 - 14 years (Assuming Fec

Threat To Humans

Harmless

IUCN Red List Status

Not Evaluated