Medaka Kuro Black are small, hardy Japanese rice fish known for their deep black colour and active nature. They are an excellent choice for outdoor ponds, planted aquariums and smaller indoor setups. Easy to care for and comfortable in a range of conditions, Medaka Kuro Black are well suited to both beginners and experienced fish keepers.
A minimum aquarium size of 20 litres is suitable for a small group of Medaka Kuro Black. A larger aquarium provides more swimming space and makes it easier to maintain stable water conditions. For outdoor setups, they can also thrive in tubs and small ponds with suitable filtration and protection from predators.
Medaka Kuro Black are peaceful and can be kept with other small, calm species that will not compete aggressively for food.
Avoid large or aggressive fish that may see Medaka as food.
Feed a quality small fish food, such as finely crushed flakes or small pellets. They also enjoy live or frozen foods such as baby brine shrimp and daphnia. Feed small portions once or twice a day, giving only what they can eat within a few minutes.
Use gentle filtration that keeps the water clean without creating a strong current. A sponge filter is a good choice for smaller aquariums.
Plants are highly recommended. Java moss, hornwort and floating plants provide shelter and give Medaka places to explore and lay eggs.
Moderate lighting works well and can help show off the fish's dark colouring. A regular day and night cycle is recommended.
Medaka Kuro Black are adaptable and generally do not require a heater when kept in suitable room temperatures. Avoid sudden temperature changes and protect outdoor setups from extreme conditions.
Fine gravel or sand works well. A darker substrate can help the black colour of Medaka Kuro Black stand out.
Keep the aquarium simple, with plants, smooth stones and other gentle decorations. Leave enough open water for swimming and provide plenty of cover around the edges.