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Teleostei (teleosts) > Beloniformes (Needle fishes) > Adrianichthyidae (Ricefishes) > Oryziinae
Etymology: Oryzias: Greek, oryza = rice; because of the habitat used by this fish (Ref. 45335); orthognathus: Greek, orthos = right + Greek, gnathos = jaws (Ref. 45335).
More on author: Kottelat.

Environment: milieu / climate zone / depth range / distribution range Ecology

Freshwater; benthopelagic; pH range: 7.5 - 8.5; non-migratory. Tropical; 22°C - 25°C (Ref. 31267); 1°S - 3°S, 120°W - 121°W (Ref. 26747)

Distribution Countries | FAO areas | Ecosystems | Occurrences | Point map | Introductions | Faunafri

Asia: Endemic to Lake Poso, Sulawesi, Indonesia.

Size / Weight / Age

Maturity: L_m ? range ? - ? cm
Max length : 6.5 cm TL male/unsexed; (Ref. 31267); common length : 5.0 cm TL male/unsexed; (Ref. 27139)

Short description Identification keys | Morphology | Morphometrics

Dorsal soft rays (total): 8 - 11; Anal soft rays: 23 - 25. Distinguished from all other species of the genus by its upturned mouth. Differs further by having 45-54 scales in lateral row, 8-11 dorsal rays and 23-25 anal rays (Ref. 26747).

Non-annual breeder. Is very difficult to maintain in aquarium (Ref. 27139).

Life cycle and mating behavior Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae

Main reference Upload your references | References | Coordinator : Seegers, Lothar | Collaborators

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. 130435: Version 2024-1)

Near Threatened (NT) (B1b(iii)); Date assessed: 16 November 2018

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

Harmless

Human uses

Fisheries: commercial; aquarium: commercial

FAO - Publication: search | FishSource |

More information

Trophic ecology
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Ecology
Ecology

Population dynamics
Growth parameters
Max. ages / sizes
Length-weight rel.
Length-length rel.
Length-frequencies
Mass conversion
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Abundance

Life cycle
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Distribution
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Anatomy
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Otolith

Physiology
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Internet sources

Estimates based on models

Phylogenetic diversity index (Ref. 82804): PD₅₀ = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].

Bayesian length-weight: a=0.00479 (0.00189 - 0.01213), 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): 3.5 ±0.5 se; based on size and trophs of closest relatives

Resilience (Ref. 120179): Low, minimum population doubling time 4.5 - 14 years (Assuming fec < 100).

Fishing Vulnerability (Ref. 59153): Low vulnerability (10 of 100).

Price category (Ref. 80766): Unknown.

Oryzias orthognathus Kottelat, 1990