Dwarf rainbowfish (Melanotaenia praecox) fish species and information / pictures of Dwarf rainbowfish - Melanotaenia praecox

Dwarf rainbowfish (Melanotaenia praecox) fish species information

Scientific Name
Melanotaenia praecox

Common Name
Dwarf rainbowfish

Biology
Dorsal spines (total): 5 - 7; Dorsal soft rays (total): 10-14; Anal spines: 1; Anal soft rays: 16 - 21. Develops a very deep body, particularly in males, at a remarkably small size (3.0-3.5 cm SL).

Classification

Classified By
Weber & de Beaufort, 1922
Class
Ray-finned fishes (Actinopterygii)
Order
Silversides (Atheriniformes)
Family
Rainbowfishes, blue eyes (Melanotaeniidae)

Distribution

Region
Asia
Distribution
Asia: Mamberamo River in northern Irian Jaya, Indonesia.
Range
2°S - 3°S

Environment

Climate
Tropical
Water Temperature From
22 °C
Water Temperature To
28 °C
Depth From - meters
Unknown m
Depth To - meters
Unknown m
Zone
benthopelagic
Environment
Freshwater; benthopelagic
Trophic Level
2.93 s.e. 0.35 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
5.0 cm
Common Length
4.0 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; aquarium: 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
  Data deficient (DD)