Small-jaw croaker (Nibea microgenys) fish species and information / pictures of Small-jaw croaker - Nibea microgenys

Small-jaw croaker (Nibea microgenys) fish species information

Scientific Name
Nibea microgenys

Common Name
Small-jaw croaker

Biology
Dorsal spines (total): 11; Dorsal soft rays (total): 29-31; Anal spines: 2; Anal soft rays: 7. Snout pointed, projecting in front of upper jaw; mouth small, inferior, slightly oblique; upper jaw length 32-38 % of head length, lower jaw length 34-40 % of head length. Mental pores in 3 pairs, the first close together, united by a crescent-shaped groove just behind symphysis. Teeth differentiated into large and small in upper jaw only; a band of villiform teeth in lower jaw. Second anal spine long, stiff, 44 to 57 % of head length. Swim bladder carrot-shaped, with 19-21 pairs of arborescent appendages along its sides, the first pair entering head beyond transverse of septum. Sagitta (large earstone) with a tadpole-shaped impression, the tail of which is J-shaped.

Classification

Classified By
Sasaki, 1992
Class
Ray-finned fishes (Actinopterygii)
Order
Perch-like fish (Perciformes)
Family
Drums or croakers (Sciaenidae)

Distribution

Region
Western Central Pacific
Distribution
Western Central Pacific: northern Australia, including the northwestern coast.
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
benthopelagic
Environment
Marine; brackish; benthopelagic
Trophic Level
3.4 s.e. 0.39 Based on size and trophs of closest relatives
Occurs in Marine / Salt water
True
Occurs in Brackish water
True
Occurs in Fresh Water
False
Occurs on Reefs
False
Is kept in Aquariums
False

Physical Size and Genetics

Maximum Length
23.0 cm
Common Length
19.0 cm
Phylogenetic Diversity Index
PD50 = 0.5010 many relatives (e.g. carps) 0.5 - 2.0 few relatives (e.g. lungfishes)

Human Uses and Population

Human Uses
Fisheries: minor commercial
Vulnerability
Low to moderate vulnerability (25 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