Blackfin croaker (Lonchurus elegans) fish species and information / pictures of Blackfin croaker - Lonchurus elegans

Blackfin croaker (Lonchurus elegans) fish species information

Scientific Name
Lonchurus elegans

Common Name
Blackfin croaker

Biology
Dorsal spines (total): 11; Dorsal soft rays (total): 32-34; Anal spines: 2; Anal soft rays: 7. Colour dark greyish above, yellowish to pale below. Pectoral fins long and jet black. Tips of pelvic and anal fins dark. Inside of gill cover black. Eye small, about 8 to 9 times in head length. Mouth small, inferior, enclosed under snout. Chin with 5 pores and many barbels, 3 to 4 pairs in a tuft around median mental pore, 15 or 16 pairs along median edges of lower jaws and subopercles. Pectoral fins greatly enlarged, extending beyond anal-fin base. Gas bladder narrow, about equal to head length, bearing anteriorly 2 pairs of appendages, anterior pair short and horn-like, lateral pair long, tube-like, extends to posterior end of gas bladder (Ref 51721).

Classification

Classified By
Boeseman, 1948
Class
Ray-finned fishes (Actinopterygii)
Order
Perch-like fish (Perciformes)
Family
Drums or croakers (Sciaenidae)

Distribution

Region
Western Atlantic
Distribution
Western Atlantic: Colombia (Ref. 5217) to Brazil.
Range
Unknown

Environment

Climate
Tropical
Water Temperature From
Unknown °C
Water Temperature To
Unknown °C
Depth From - meters
Unknown m
Depth To - meters
25 m
Zone
demersal
Environment
Marine; brackish; demersal; depth range ? - 25 m (Ref. 5217)
Trophic Level
3.27 s.e. 0.31 Based on food items.
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
32.0 cm
Common Length
27.0 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: minor commercial
Vulnerability
Low to moderate vulnerability (26 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