Javanese ricefish (Oryzias javanicus)

Scientific name: Oryzias javanicus Bleeker, 1854

Javanese ricefish (Oryzias javanicus)

The Javanese ricefish (Oryzias javanicus) is a freshwater fish of the family Adrianichthyidae that grows to about 4.5 cm (1.8 in). It is easy to keep and peaceful, needs carefully chosen tank mates and needs a tank of at least 75 L (20 US gal), water at 20–24°C (68–75°F) and a pH of 7.5–8.5. Native range: Asia, Indonesia, Singapore, Malaysia and Thailand.

Javanese ricefish care at a glance

Care level
Easy
Temperament
Peaceful
Community tank
With caution
Adult size
4.5 cm (1.8 in)
Minimum tank
75 L (20 US gal)
Temperature
20–24°C (68–75°F)
pH
7.5–8.5
Hardness
2–10 dGH (36–178 ppm)
Diet
Omnivore. Accepts flakes, frozen foods and live foods.

Biology

Dorsal soft rays (total): 6-7; Anal soft rays: 20 - 25; Vertebrae: 28 - 29. Principal caudal fin rays 5/6.

Source: FishBase, licensed CC BY-NC 4.0.

Species facts

Scientific name
Oryzias javanicus
Family
Adrianichthyidae (Ricefishes)
Order
Beloniformes (Needle fishes)
Class
Actinopterygii (Ray-finned fishes)
Maximum length
4.5
Common length
3.0
Environment
Freshwater; brackish;; pH range: 7.5 - 8.5 benthopelagic; non-migratory
Climate
Tropical
Distribution
Asia: Indonesia, Singapore, Malaysia, Thailand. Recorded from the Mekong.
Conservation status (IUCN)
Not Evaluated
Threat to humans
Harmless
Uses
Fisheries: of no interest; aquarium: commercial
Resilience
Low, minimum population doubling time 4.5 - 14 years (Assuming fec

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Sources

Taxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0. Aquarium care parameters compiled, checked and converted to metric and imperial units by Guppies.za.net.

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