Scientific Name
Thyrsitoides marleyi

Common Name
Black snoek

Biology
Dorsal spines (total): 17 - 19; Dorsal soft rays (total): 16-17; Anal spines: 1; Anal soft rays: 16 - 17; Vertebrae: 34. Two lateral lines, originating above the upper angle of gill opening, branching below the 4th dorsal-fin spine or slightly behind it, upper line running along the first dorsal-fin base and ending below about the end of the first dorsal fin, lower line abruptly curved backward from bifurcation, running mid laterally to the base of the middle caudal-fin ray. Body color is dark brown with slightly metallic reflections, sometimes slightly paler on belly. Dorsal fin membranes with black markings.

Classification

Classified By

Fowler, 1929

Class

Ray-finned fishes (Actinopterygii)

Order

Perch-like fish (Perciformes)

Family

Snake mackerels (Gempylidae)

Distribution

Region

Indo-West Pacific

Distribution

Indo-West Pacific: Red Sea to South Africa and New Caledonia, north to Japan. Recently reported from Tonga (Ref. 53797).

Range

39°N - 38°S, 20°E - 174°E

Environment

Climate

Deep-water

Water Temperature From

Unknown °C

Water Temperature To

Unknown °C

Depth From - meters

0 m

Depth To - meters

400 m

Zone

benthopelagic

Environment

Marine; benthopelagic; depth range 0 - 400 m (Ref. 6181)

Trophic Level

4.19 s.e. 0.58 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

200 cm

Common Length

100.0 cm

Phylogenetic Diversity Index

PD50 = 1.0000 many relatives (e.g. carps) 0.5 - 2.0 few relatives (e.g. lungfishes)

Human Uses and Population

Human Uses

Fisheries: minor commercial

Vulnerability

Very high vulnerability (80 of 100)

Resilience

Very Low, minimum population doubling time more than 14 years (Preliminary K or Fecundity.)

Threat To Humans

Harmless

IUCN Red List Status

Not Evaluated