Scientific Name
Sebastes helvomaculatus

Common Name
Rosethorn rockfish

Biology
Found on soft bottoms (Ref. 2850). Often caught on commercial longlines set below 108 m (Ref. 27437). Viviparous (Ref. 34817).

Classification

Classified By

Ayres, 1859

Class

Ray-finned fishes (Actinopterygii)

Order

Scorpionfishes and Flatheads (Scorpaeniformes)

Family

Rockfishes, rockcods and thornyheads (Sebastidae)

Distribution

Region

Eastern Pacific

Distribution

Eastern Pacific: Kodiak Island, Alaska to Guadalupe Island, Baja California, Mexico. Rare south of San Francisco, California.

Range

60°N -

Environment

Climate

Temperate

Water Temperature From

Unknown °C

Water Temperature To

Unknown °C

Depth From - meters

25 m

Depth To - meters

549 m

Zone

demersal

Environment

Marine; demersal; depth range 25 - 549 m (Ref. 6793)

Trophic Level

3.64 s.e. 0.56 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

41.0 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

Unknown

Vulnerability

High to very high vulnerability (66 of 100)

Resilience

Very Low, minimum population doubling time more than 14 years (tmax=87; tm=10)

Threat To Humans

Harmless

IUCN Red List Status

Not Evaluated