Scientific Name
Eumicrotremus orbis

Common Name
Pacific spiny lumpsucker

Biology
Dorsal spines (total): 6 - 7; Dorsal soft rays (total): 9-11; Anal spines: 0; Anal soft rays: 8 - 10. Caudal narrow and rounded; pectorals with a long base extended to ventral surface, all rays slightly exserted, ventral ones more so; pelvic fins with rays ossified and modified to support all of a large adhesive disc with thickened fringed margin (Ref. 6885). Light to dark green, sometimes light brown dorsally; light brown or plum ventrally; lips lavender; tubercles in males dull orange or reddish brown; tubercles in females are larger and more numerous and pale green (Ref. 6885).

Classification

Classified By

G?nther, 1861

Class

Ray-finned fishes (Actinopterygii)

Order

Scorpionfishes and Flatheads (Scorpaeniformes)

Family

Lumpfishes (Cyclopteridae)

Distribution

Region

North Pacific

Distribution

North Pacific: Chukchi Sea and Sea of Okhotsk to Muroran, Hokkaido (Japan), Amchitka Island in the Aleutian chain and Puget Sound, Washington, USA.

Range

66°N - 46°N

Environment

Climate

Temperate

Water Temperature From

Unknown °C

Water Temperature To

Unknown °C

Depth From - meters

0 m

Depth To - meters

575 m

Zone

demersal

Environment

Marine; demersal; depth range 0 - 575 m (Ref. 6793)

Trophic Level

3.2 s.e. 0.42 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

18.0 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:

Vulnerability

Low to moderate vulnerability (32 of 100)

Resilience

Medium, minimum population doubling time 1.4 - 4.4 years (Preliminary K or Fecundity.)

Threat To Humans

Harmless

IUCN Red List Status

Not Evaluated