Slender fivefinger threadfin (Polydactylus bifurcus) fish species and information / pictures of Slender fivefinger threadfin - Polydactylus bifurcus

Slender fivefinger threadfin (Polydactylus bifurcus) fish species information

Scientific Name
Polydactylus bifurcus

Common Name
Slender fivefinger threadfin

Biology
Dorsal spines (total): 9; Dorsal soft rays (total): 13; Anal spines: 3; Anal soft rays: 11. Body with 8 faint stripes along longitudinal scale rows above lateral line. Pectoral filaments 5. Second spine of dorsal fin very strong, 2.5 times width of 3rd spine. Lateral line bifurcated on caudal fin base, extending to posterior margins of upper and lower caudal fin lobes (Ref. 40970).

Classification

Classified By

Motomura, Kimura & Iwatsuki, 2001

Class

Ray-finned fishes (Actinopterygii)

Order

Perch-like fish (Perciformes)

Family

Threadfins (Polynemidae)

Distribution

Region

Eastern Indian Ocean

Distribution

Eastern Indian Ocean: Indonesia.

Range

2°N - 9°S, 96°E - 117°E

Environment

Climate

Tropical

Water Temperature From

Unknown °C

Water Temperature To

Unknown °C

Depth From - meters

Unknown m

Depth To - meters

2 m

Zone

demersal

Environment

Marine; demersal; depth range ? - 2 m (Ref. 40970)

Trophic Level

3.6 s.e. 0.61 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

27.0 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

Fisheries: of no interest

Vulnerability

Low vulnerability (23 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