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

Dwarf rainbowfish (Melanotaenia praecox) fish profile

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Scientific Name Melanotaenia praecox
Classified By Weber & de Beaufort, 1922
Common Name Dwarf rainbowfish
Class Ray-finned fishes (Actinopterygii)
Order Silversides (Atheriniformes)
Family Rainbowfishes, blue eyes (Melanotaeniidae)
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).
Climate Tropical
Water Temperature From - Celcius 22 °C
Water Temperature To - Celcius 28 °C
Depth From - meters Unknown m
Depth To - meters Unknown m
Zone benthopelagic
Distribution Asia: Mamberamo River in northern Irian Jaya, Indonesia.
Region Asia
Range 2°S - 3°S
Maximum Length 5.0 cm
Common Length 4.0 cm
Environment Freshwater; benthopelagic
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) 
Human Uses Fisheries: of no interest; aquarium: commercial
Phylogenetic Diversity Index PD50 = 0.5000 many relatives (e.g. carps) 0.5 - 2.0 few relatives (e.g. lungfishes)
Trophic Level 2.93 s.e. 0.35 Based on size and trophs of closest relatives
Is kept in Aquariums True
Occurs in Marine / Salt water False
Occurs in Brackish water False
Occurs in Fresh Water True
Occurs on Reefs False