Filament cusk (Homostolus acer) fish species and information / pictures of Filament cusk - Homostolus acer

Filament cusk (Homostolus acer) fish species information

Scientific Name
Homostolus acer

Common Name
Filament cusk

Biology
Rather elongate body with pointed head; eye diameter equal to or longer than snout; jaw teeth granular in narrow bands; opercular spine sharp and straight; 1-3 sharp spines on lower margin of preopercle; median basibranchial tooth patch 1; developed rakers on anterior gill arch 27-42; pectoral fins low on the body; each pelvic fin with 1 ray longer than head; precaudal vertebrae 13.

Classification

Classified By

Smith & Radcliffe, 1913

Class

Ray-finned fishes (Actinopterygii)

Order

Cusk eels (Ophidiiformes)

Family

Cusk-eels (Ophidiidae)

Distribution

Region

Western Pacific

Distribution

Western Pacific: off Japan to off Australia and New Caledonia.

Range

Unknown

Environment

Climate

Deep-water

Water Temperature From

Unknown °C

Water Temperature To

Unknown °C

Depth From - meters

300 m

Depth To - meters

1000 m

Zone

bathydemersal

Environment

Marine; bathydemersal; depth range 300 - 1000 m (Ref. 34024)

Trophic Level

3.48 s.e. 0.57 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

18.4 cm

Common Length

Unknown cm

Phylogenetic Diversity Index

PD50 = 1.0000 many relatives (e.g. carps) 0.5 - 2.0 few relatives (e.g. lungfishes)

Human Uses and Population

Human Uses

Fisheries: minor commercial

Vulnerability

Low to moderate vulnerability (25 of 100)

Resilience

Medium, minimum population doubling time 1.4 - 4.4 years (Assuming tmax>3)

Threat To Humans

Harmless

IUCN Red List Status

Not Evaluated