Alfonsino (Beryx decadactylus) fish species and information / pictures of Alfonsino - Beryx decadactylus

Alfonsino (Beryx decadactylus) fish species information

Scientific Name
Beryx decadactylus

Common Name
Alfonsino

Biology
Dorsal spines (total): 4; Dorsal soft rays (total): 18-20; Anal spines: 4; Anal soft rays: 25 - 30. Body deep, compressed and has a large eye. Top of head, iris, back and all fins bright blood red. Orbital bones, cheeks and opercular bones shiny white. Breast shiny yellowish white. Body silvery with thin lengthwise lines (Ref. 37108).

Classification

Classified By

Cuvier, 1829

Class

Ray-finned fishes (Actinopterygii)

Order

Sawbellies (Beryciformes)

Family

Alfonsinos (Berycidae)

Distribution

Region

Worldwide in temperate and tropical latitudes, except the eastern Pacific. Eastern Atlantic

Distribution

Worldwide in temperate and tropical latitudes, except the eastern Pacific. Eastern Atlantic: Greenland, Iceland, and Norway to Western Sahara and South Africa, including western Mediterranean. Western Atlantic: south to Brazil. Also found in Argentine (Ref. 2806). Indo-Pacific: East Africa (including the Madascar Ridge and Saya de Malha Bank, Ref. 33390) to Japan, Australia, and New Zealand (Ref. 5755). The limited number of records in the western Pacific is doubtless the result of limited fishing effort below 200 m (Ref. 9833).

Range

70°N - 48°S, 180°W - 180°E

Environment

Climate

Deep-water

Water Temperature From

Unknown °C

Water Temperature To

Unknown °C

Depth From - meters

110 m

Depth To - meters

1000 m

Zone

bathydemersal

Environment

Marine; bathydemersal; depth range 110 - 1000 m (Ref. 58302), usually 200 - 400 m (Ref. 35388)

Trophic Level

4.13 s.e. 0.76 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

100.0 cm

Common Length

35.0 cm

Phylogenetic Diversity Index

PD50 = 0.6260 many relatives (e.g. carps) 0.5 - 2.0 few relatives (e.g. lungfishes)

Human Uses and Population

Human Uses

Fisheries: commercial

Vulnerability

High to very high vulnerability (73 of 100)

Resilience

Low, minimum population doubling time 4.5 - 14 years (K = 0.11-0.16; tmax >11)

Threat To Humans

Harmless

IUCN Red List Status

Not Evaluated