Scientific Name
Paraliparis cephalus

Common Name
Swellhead snailfish

Biology
Dorsal spines (total): 0; Dorsal soft rays (total): 50-57; Anal spines: 0; Anal soft rays: 44 - 51; Vertebrae: 57 - 63. Pectoral fin deeply notched (Ref. 26773). Skin transparent; musculature pale, with scattered melanophores, especially dense near dorsal and anal fin base; mouth pale or light tan; gill cavity blackish; peritoneum and stomach black; pyloric caeca pale (Ref. 26773).

Classification

Classified By

Gilbert, 1892

Class

Ray-finned fishes (Actinopterygii)

Order

Scorpionfishes and Flatheads (Scorpaeniformes)

Family

Snailfishes (Liparidae)

Distribution

Region

North Pacific

Distribution

North Pacific: off Commander Islands, central Bering Sea, off Unalaska Island, western Gulf of Alaska, northern British Columbiai to southern California, USA.

Range

Unknown

Environment

Climate

Deep-water

Water Temperature From

Unknown °C

Water Temperature To

Unknown °C

Depth From - meters

294 m

Depth To - meters

1800 m

Zone

bathydemersal

Environment

Marine; bathydemersal; depth range 294 - 1800 m (Ref. 58496)

Trophic Level

3.38 s.e. 0.47 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

8.2 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

Low vulnerability (11 of 100)

Resilience

High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.)

Threat To Humans

Harmless

IUCN Red List Status

Not Evaluated