Javanese Medaka Rice Fish

Scientific Name: Oryzias javanicus
Common Name: Javanese Rice Fish

**Note: All livestock orders will come carefully packaged with solid wall Styrofoam insulation and shipped via 1-day shipping only. No extra insulation needs to be added to your cart for your livestock.

The Javanese Rice Fish (Oryzias javanicus) brings a subtle, sophisticated glow to any aquarium. This fascinating species has a translucent, pearly body that catches light in all the right ways, with some individuals showing sleek black, green, or yellow accents. They really shine in a densely planted tank, where their soft, ghostly glow stands out beautifully against darker substrate and hardscape. They’re also hardy enough for full brackish setups, making them a versatile pick for a wide range of parameters and salinity levels. Adding a school of these understated beauties is an easy way to show you’ve got great taste, no fin‑ternet deep dive required.

Behavior

• These fish are exceptionally hardy, beginner-friendly, and adaptable to a wide variety of aquarium parameters, including brackish water setups.
• In a standard home aquarium, these active fish are primarily mid- to top-level swimmers.
• They are a deeply peaceful species that should be housed alongside other gentle nano fish and larger peaceful invertebrates.
• They do best in schools of 6 or more and will display their best color and behavior when kept in appropriate numbers.
• This species has the potential to jump, so a well-fitting lid or dense floating live aquarium plants are highly recommended for coverage.

Diet

Feeding Rice Fish is simple. They are omnivores with a healthy appetite and will eagerly eat a wide variety of fish food. To maintain their health, provide a balanced diet of high-quality flakes and micro pellets. They will also readily accept live or frozen foods, such as baby brine shrimp or daphnia, which mimic their natural diet and support optimal energy levels. Feed them small amounts once or twice daily.

Quick Care Stats

• Origin: Tank-bred
• Temperament: Peaceful – Fin-tastic for community tanks
• Average Size: 1 - 1.5 inches
• Diet: Omnivore
• Minimum Tank Size: 10 Gallons
• Ideal Group Size: School of 6 or more

Want to make sure your Medaka stay healthy and thrive? Click here for a complete Japanese Rice Fish Care Guide