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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