Pacific longnose chimaera (Harriotta raleighana) fish species and information / pictures of Pacific longnose chimaera - Harriotta raleighana

Pacific longnose chimaera (Harriotta raleighana) fish species information

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Scientific Name
Harriotta raleighana

Common Name
Pacific longnose chimaera

Biology
Dorsal spines : 1; Anal spines: 0; Anal soft rays: 0. A longnose chimaera with a rather long, narrow, depressed snout, a small eye situated above or behind the mouth, a rather long first dorsal fin and spine, knobby tooth plates, and caudal fin lanceolate with no tubercles on upper edge but with a long terminal filament. Dark brown or blackish in color. No separate anal fin. Claspers are rod like, rather slender, unbranched, with tip somewhat swollen. Jugular and oral canals arising separately from orbital, with a short interspace; angular canal joining suborbital about 2/7 of distance from front level of eye toward tip of snout.

Classification

Classified By

Goode & Bean, 1895

Class

Chimaeras (Holocephali)

Order

Chimaeras (Chimaeriformes)

Family

Longnose chimaeras (Rhinochimaeridae)

Distribution

Region

Eastern Atlantic

Distribution

Eastern Atlantic: Iceland, Faeroe Islands, Rockall Trough along Ireland to northern France; Canary Islands and off Cap Blanc, Mauritania; Namibia and South Africa. Western Atlantic: Nova Scotia, Canada to Chesapeake Bay in USA; southern Brazil. North Pacific: off Japan and California, USA; also 100 km off southern Baja California. South Pacific: off New Zealand and Australia.

Range

65°N - 49°S

Environment

Climate

Deep-water

Water Temperature From

Unknown °C

Water Temperature To

Unknown °C

Depth From - meters

200 m

Depth To - meters

2600 m

Zone

bathydemersal

Environment

Marine; bathydemersal; depth range 200 - 2600 m

Trophic Level

3.55 s.e. 0.50 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

120 cm

Common Length

Unknown cm

Phylogenetic Diversity Index

PD50 = 0.7539 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

Moderate vulnerability (45 of 100)

Resilience

Low, minimum population doubling time 4.5 - 14 years (Assuming Fec

Threat To Humans

Harmless

IUCN Red List Status

Least Concern (LC)