Abi Medaka Rice Fish

Species Profile

Abi Medaka Rice Fish (Oryzias latipes) are a petite Japanese domestic strain known for their luminous, silvery-blue iridescence and semi-translucent body. Staying slightly more compact than standard medaka varieties, they cruise the upper third of the water column, catching rim light and providing cool-toned contrast against deep green stem plants and dark hardscape. While they look crisp through front aquarium glass, Medakas have a long history of being appreciated from above, making them just as well suited for shallow indoor setups and patio tubs as standard glass aquariums. Because they feed actively right at the waterline and can leap when startled, keeping a secure lid on the tank is essential.

**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.

Key Features & Notes

• Silvery-blue iridescent sheen provides clean, cool-toned contrast against dark hardscape and dense foliage.
• Active top-dwelling nano schooler that stays plant-safe and leaves carpet plants rooted.
• Cold-tolerant and adaptable nature thrives in unheated indoor tanks, heated community setups, or outdoor tubs.

Acclimation & Care Instructions

• Float the sealed transport bag for 15 to 20 minutes to equalize water temperatures before opening.
• Drip acclimate over 30 to 45 minutes using airline tubing to ease them into your tank's GH, KH, and pH levels.
• Equip your tank with a snug lid or generous floating plant cover; active Medakas can leap when startled.
• Provide gentle surface circulation; strong filter turbulence can easily exhaust these petite surface swimmers.
• Feed crushed flakes, micro pellets, or baby brine shrimp once or twice daily to match their small, upturned mouths.
• Keep in groups of 6 or more to encourage confident schooling behavior and reduce stress.
• Silvery-blue sheen and translucency vary naturally between individual fish and intensify under full-spectrum lighting.

Quick Facts

Listed information should be treated as general guidelines only. Team Buce Plant encourages you to do thorough research to ensure healthy livestock!

Frequently Asked Questions

1. Do Abi Medaka Rice Fish require an aquarium heater?

Not in a standard indoor room. Japanese Medakas are eurythermal and handle wide temperature ranges with ease, thriving at typical room temperatures between 64°F and 74°F without a heater. They are also fully compatible with heated community aquariums up to 78°F or unheated outdoor mini ponds in spring and summer.

2. Are Abi Medakas safe to keep with dwarf shrimp?

Adult Neocaridina and Caridina shrimp are safe to house with them. Medakas stay close to the waterline and have small upturned mouths, rarely interacting with shrimp grazing on hardscape or substrate. Free-swimming newborn shrimplets at the surface can be eaten, so having dense moss and low ground cover provides plenty of protection for your colony.

3. How do Medaka Rice Fish spawn, and how do I raise the fry?

Females produce small bunches of eggs that hang from their vent like tiny grape clusters before they brush them off into floating plant roots or artificial yarn mops. For a complete breakdown of setting up breeding tubs, collecting egg mops, and raising fry, read our Japanese Rice Fish Care Guide.

4. What tank mates work best with Abi Medaka Rice Fish?

They do best with calm, non-aggressive species that occupy the middle and bottom layers of the tank. Good pairings include pygmy Corydoras, Otocinclus, small rasboras, and clean-up crews like Nerite snails or Amano shrimp. Avoid aggressive surface feeders or fin-nippers that could harass them or outcompete them during feeding time.