Scientific Name
Rinoctes nasutus

Common Name
Abyssal smooth-head

Biology
Abyssal, mostly found below 3,650 m; locally frequent, somewhat gregarious. Feeds on engybenthic crustaceans, worms and sponges.

Classification

Classified By

Koefoed, 1927

Class

Ray-finned fishes (Actinopterygii)

Order

Smelts (Osmeriformes)

Family

Slickheads (Alepocephalidae)

Distribution

Region

Eastern Atlantic

Distribution

Eastern Atlantic: south-west of Ireland, Azores Island, scattered records off Morocco and off Mauritania. Western Atlantic: Gulf of Mexico (Ref. 4736). Probably occurring in the Western Central Pacific (Ref. 38717). Reported from the Indian Ocean (Ref. 43180).

Range

55°N - 18°N, 93°W - 12°W

Environment

Climate

Deep-water

Water Temperature From

Unknown °C

Water Temperature To

Unknown °C

Depth From - meters

2000 m

Depth To - meters

4156 m

Zone

bathyalpelagic

Environment

Marine; bathypelagic; depth range 2000 - 4156 m (Ref. 4460), usually 3650 - ? m

Trophic Level

3.18 s.e. 0.31 Based on food items.

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

19.0 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

Unknown

Vulnerability

Moderate vulnerability (38 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