Fingered dragonet (Dactylopus dactylopus) fish species and information / pictures of Fingered dragonet - Dactylopus dactylopus

Fingered dragonet (Dactylopus dactylopus) fish species information

Scientific Name
Dactylopus dactylopus

Common Name
Fingered dragonet

Biology
Dorsal spines (total): 4; Dorsal soft rays (total): 8; Anal spines: 0; Anal soft rays: 7. Identified by the finger-like separate first rays of the ventral fins, and distinguished from the similar D. kuiteri in usually having 8 divided rays in the second dorsal fin (versus 9), the fin with a distinct horizontal pattern of lines in adults, and males have long filaments on the first dorsal fin (versus short or absent) (Ref. 48636). Body moderately depressed. Preopercular spine with processes on both inner and outer sides. Pelvic spine and 1st pelvic ray fused into an elongate rod, separated from the other pelvic rays. Attains 10 cm SL.

Classification

Classified By
Valenciennes, 1837
Class
Ray-finned fishes (Actinopterygii)
Order
Perch-like fish (Perciformes)
Family
Dragonets (Callionymidae)

Distribution

Region
Western Pacific
Distribution
Western Pacific: Japan (Ref. 559) to northwestern Australia.
Range
Unknown

Environment

Climate
Tropical
Water Temperature From
Unknown °C
Water Temperature To
Unknown °C
Depth From - meters
1 m
Depth To - meters
55 m
Zone
reef-associated
Environment
Marine; reef-associated; depth range 1 - 55 m (Ref. 37816)
Trophic Level
3.44 s.e. 0.45 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
True
Is kept in Aquariums
True

Physical Size and Genetics

Maximum Length
30.0 cm
Common Length
Unknown cm
Phylogenetic Diversity Index
PD50 = 0.7500 many relatives (e.g. carps) 0.5 - 2.0 few relatives (e.g. lungfishes)

Human Uses and Population

Human Uses
Fisheries: of no interest; aquarium: commercial
Vulnerability
Low to moderate vulnerability (33 of 100)
Resilience
Medium, minimum population doubling time 1.4 - 4.4 years (Preliminary K or Fecundity.)
Threat To Humans
  Harmless
IUCN Red List Status
  Not Evaluated