Actinopteri (ray-finned fishes) > Beloniformes
(Needle fishes) > Adrianichthyidae
(Ricefishes) > Oryziinae
Etymology: Oryzias: Greek, oryza = rice; because of the habitat used by this fish (Ref. 45335).
Environment: milieu / climate zone / depth range / distribution range
Freshwater; benthopelagic; pH range: 7.5 - 8.5; non-migratory; depth range - m (Ref. ), usually - m (Ref. ). Tropical; 22°C - 25°C (Ref. 31267)
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 4.1 cm SL male/unsexed; (Ref. 85098)
Morphology | Morphometrics
soft rays: 20 - 26. Distinguished from all other members of the genus by the combination of the following characters: 20-26 anal rays; 9-12 dorsal rays; 31-32 scales in lateral row; body depth 25-31% SL; and color pattern of male in life with greyish brown head and body with diffuse dark brown blotches irregularly dispersed on body and always with a row of 5-9 larger blotches more or less irregularly organized above axial stripe (Ref. 26687).
Non-annual breeder. Is very difficult to maintain in aquarium (Ref. 27139).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Egg clusters are carried by females under the ventral fin (Ref. 26687).
Kottelat, M., A.J. Whitten, S.N. Kartikasari and S. Wirjoatmodjo, 1993. Freshwater fishes of Western Indonesia and Sulawesi. Periplus Editions, Hong Kong. 221 p. (Ref. 7050)
IUCN Red List Status (Ref. 124695)
Threat to humans
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingNutrientsMass conversion
Estimates based on models
Phylogenetic diversity index (Ref. 82805
= 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00479 (0.00190 - 0.01207), b=3.13 (2.91 - 3.35), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245
Trophic level (Ref. 69278
): 3.4 ±0.4 se; based on size and trophs of closest relatives
Resilience (Ref. 120179
): Low, minimum population doubling time 4.5 - 14 years (Assuming fec < 100, egg cluster of 13-15 eggs).
Vulnerability (Ref. 59153
): Low vulnerability (10 of 100) .