River threadfin (Polydactylus macrophthalmus) fish species and information / pictures of River threadfin - Polydactylus macrophthalmus

River threadfin (Polydactylus macrophthalmus) fish species information

Scientific Name
Polydactylus macrophthalmus

Common Name
River threadfin

Biology
Dorsal spines (total): 9; Dorsal soft rays (total): 13-14; Anal spines: 3; Anal soft rays: 11. Occipital profile concave in adults. Pectoral filaments 7 with 3 filaments extending beyond caudal fin base and the fifth extending beyond tip of caudal fin lobe. Long pectoral fin rays, 24-26% of SL (Ref. 40968, 41110).

Classification

Classified By
Bleeker, 1858
Class
Ray-finned fishes (Actinopterygii)
Order
Perch-like fish (Perciformes)
Family
Threadfins (Polynemidae)

Distribution

Region
Asia
Distribution
Asia: Kapuas River, Kalimantan and the Musi and Batanghari rivers, Sumatra, Indonesia.
Range
Unknown

Environment

Climate
Tropical
Water Temperature From
Unknown °C
Water Temperature To
Unknown °C
Depth From - meters
Unknown m
Depth To - meters
Unknown m
Zone
demersal
Environment
Freshwater; demersal
Trophic Level
3.7 s.e. 0.63 Based on size and trophs of closest relatives
Occurs in Marine / Salt water
False
Occurs in Brackish water
False
Occurs in Fresh Water
True
Occurs on Reefs
False
Is kept in Aquariums
True

Physical Size and Genetics

Maximum Length
52.0 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
Aquarium: commercial
Vulnerability
Low to moderate vulnerability (29 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