Scientific Name
Herwigia kreffti

Common Name
Krefft's smooth-head

Biology
Dorsal spines : 0; Dorsal soft rays : 15-18; Anal spines: 0; Anal soft rays: 13 - 15

Classification

Classified By

Nielsen & Larsen, 1970

Class

Ray-finned fishes (Actinopterygii)

Order

Smelts (Osmeriformes)

Family

Bathylaconids (Bathylaconidae)

Distribution

Region

Eastern Atlantic

Distribution

Eastern Atlantic: scattered records from 53?N south to Azores, then from Morocco southward to Namibia. Eastern Pacific: off Hawaii. Indo-West Pacific: including Australia and New Zealand. Elsewhere, Indian Ocean.

Range

53°N - 49°S, 32°W - 154°W

Environment

Climate

Deep-water

Water Temperature From

Unknown °C

Water Temperature To

Unknown °C

Depth From - meters

1000 m

Depth To - meters

3200 m

Zone

bathyalpelagic

Environment

Marine; bathypelagic; depth range 1000 - 3200 m

Trophic Level

3.38 s.e. 0.44 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

40.0 cm

Common Length

Unknown cm

Phylogenetic Diversity Index

PD50 = 1.0625 many relatives (e.g. carps) 0.5 - 2.0 few relatives (e.g. lungfishes)

Human Uses and Population

Human Uses

Fisheries: of no interest

Vulnerability

High vulnerability (58 of 100)

Resilience

Low, minimum population doubling time 4.5 - 14 years (Preliminary K or Fecundity.)

Threat To Humans

Harmless

IUCN Red List Status

Not Evaluated