Black Medaka Japanese Ricefish
The Medaka Ricefish Black (Oryzias latipes ‘Black’) or Black Medaka Japanese Ricefish is a small, hardy fish native to East Asia. Due to its small size, peaceful nature, and tolerance for a wide range of water parameters, this fish has become one of the most popular choices for sale in our store. With the attractive color of their bodies, Black Medaka Ricefish is the ideal choice for any aquarium. As a schooling fish, it needs to be kept with a group of 6 or more. This not only makes the aquarium more attractive but also helps reduce stress and aggressive behavior. Although Black Medaka Ricefish is not picky about food or water parameters, it still requires some specific care.
Specifications
| Feature | Detail |
|---|---|
| Scientific Name | Oryzias latipes ‘Black’ |
| Size | Up to 1.5 inches (4 cm) |
| Color | Black body with bright eyes |
| Temperament | Peaceful, schooling |
| Group Size | 6 or more fish required |
| Water Tolerance | Wide range of parameters |
FAQ
What is the ideal group size for Black Medaka Ricefish?
Black Medaka Ricefish should be kept in a group of 6 or more to ensure their well-being and to maintain natural behavior.
How big do Black Medaka Ricefish grow?
They can grow up to 1.5 inches (4 cm) in length.
Are Black Medaka easy to care for?
Yes, they are hardy and tolerant of a wide range of water conditions, making them suitable for beginners.

Caroline Clark –
I bought a group of six Black Medaka and they’ve been thriving in my 10-gallon tank. They swim together nicely and look very attractive. The fish are active but not aggressive, and they don’t require much maintenance. I’m happy with the purchase.
Warren Bailey –
The fish arrived healthy and looked vibrant. I kept them in a community tank with other small fish, and they seem to get along well. I only noticed they need to be kept in groups, so I made sure to buy six.
Sebastian Marshall –
Great addition to my aquarium. The black color stands out well, and they are very active. I’ve kept them for three months now and they haven’t shown any signs of stress or illness.