Teleostei (teleosts) > Atheriniformes
(Silversides) > Melanotaeniidae
(Rainbowfishes, blue eyes)
Etymology: Melanotaenia: Greek, melan, -anos = black + latin, taenia = stripe (Ref. 45335).
Environment: milieu / climate zone / depth range / distribution range
Freshwater; benthopelagic; depth range 0 - 1 m. Tropical; 14°S - 16°S
Oceania: known only from two small tributaries of the Prince Regent River, West Kimberley district, northwestern Australia.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 5.5 cm SL male/unsexed; (Ref. 44894); 3.5 cm SL (female); common length : 4.0 cm SL male/unsexed; (Ref. 44894)
Occurs in fast flowing streams interrupted by frequent cascades or rapids. Usually inhabits the deeper pools, often at the base of waterfalls with very clear water and a primarily solid rock bottom with little or no vegetative cover (Ref. 5259, 44894). Inhabits pools and rivulets on sandstone terraces (Ref. 44894). Seen in schools containing up to 50 or more individuals (Ref. 44894). Both sexes can become sexually mature at 2.3 cm SL (Ref. 2906) A popular aquarium species that thrives in captivity (Ref. 44894).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Distinct pairing (Ref. 205).
Allen, G.R., 1989. Freshwater fishes of Australia. T.F.H. Publications, Inc., Neptune City, New Jersey. (Ref. 5259)
IUCN Red List Status (Ref. 126983)
Threat to humans
Fisheries: of no interest
for Melanotaenia pygmaea' title='Maturity
for Melanotaenia pygmaea' target='_blank'>MaturitySpawningSpawning aggregationFecundityEggsEgg development
for Melanotaenia pygmaea' title='Aquaculture profile
for Melanotaenia pygmaea' target='_blank'>Aquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingNutrientsMass conversion
Estimates based on models
Phylogenetic diversity index (Ref. 82804
= 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01122 (0.00514 - 0.02450), b=3.04 (2.87 - 3.21), in cm total length, based on all LWR estimates for this body shape (Ref. 93245
Trophic level (Ref. 69278
): 2.9 ±0.4 se; based on size and trophs of closest relatives
Resilience (Ref. 120179
): High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref. 59153
): Low vulnerability (10 of 100).