Brown hagfish (Eptatretus atami) fish species and information / pictures of Brown hagfish - Eptatretus atami

Brown hagfish (Eptatretus atami) fish species information

Scientific Name
Eptatretus atami

Common Name
Brown hagfish

Biology
Gill pouches 6 pairs with gill apertures closely spaced in a fairly straight line; 1-2 GP at end of dental muscle. Ventral aorta splitting at about GP 5-6. Fused cusps 3/3. Total cusps 47-52. Prebranchial slime pores 12-19. Total pores 71-78. Eyespots faint or absent. Ventral finfold low to vestigial.

Classification

Classified By
Dean, 1904
Class
Hagfishes (Myxini)
Order
Hagfishes (Myxiniformes)
Family
Hagfishes (Myxinidae)

Distribution

Region
Northwest Pacific
Distribution
Northwest Pacific: Japan. Notoriously confused with other unnamed species around Japan.
Range
Unknown

Environment

Climate
Deep-water
Water Temperature From
Unknown °C
Water Temperature To
Unknown °C
Depth From - meters
300 m
Depth To - meters
536 m
Zone
bathydemersal
Environment
Marine; bathydemersal; non-migratory; depth range 300 - 536 m
Trophic Level
4.5 s.e. 0.80 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
61.0 cm
Common Length
Unknown cm
Phylogenetic Diversity Index
PD50 = 0.5000 many relatives (e.g. carps) 0.5 - 2.0 few relatives (e.g. lungfishes)

Human Uses and Population

Human Uses
Fisheries: commercial
Vulnerability
Moderate to high vulnerability (47 of 100)
Resilience
Low, minimum population doubling time 4.5 - 14 years (Fec assumed to be
Threat To Humans
Harmless
IUCN Red List Status
Not Evaluated