Black Medaka Japanese Ricefish

  • In stock, ready to ship
  • Inventory on the way
  • Live Arrival Guarantee
  • Fast shipping
  • All our live fish, shrimp, snails are care with love and passion, when through minimum of 14 days quarantined and shipped from Splashy Fish facility in Springfield, Virginia, USA
Regular price$5.99
Shipping calculated at checkout.

This is only apply to live fish order.

Live Arrival Guarantee:

Benefit from our extensive experience in shipping live fish. In 2021, our records indicated a mere 0.5% dead-on-arrival (DOA) rate for all live fish orders, compared to the industry standard of 1.5%. These numbers translate to only 5 out of 1000 orders experiencing DOA fish.

At Splashy Fish, customer satisfaction is our priority. That's why we provide a 100% Live Arrival Guarantee on all animals shipped via USPS, UPS, or FedEx. Please note - Splashy Fish reserves the right to void Live Arrival Guarantee protection under the following circumstances:

  1. The customer has chosen USPS First Class Mail as a shipping method. 
  2. The shipping address is a PO Box address
  3. The order was refused delivery by the customer.
  4. If the order is returned to the sender for any reason. For instance, an incorrect shipping address, an undeliverable address, etc. 
  5. The order was held for pick up at USPS, UPS, and FedEx offices for longer than 24 hours after the last update on the tracking number. 
  6. The Live Arrival Guarantee claim does not include all the requirements mentioned below
  7. The Live Arrival Guarantee claim is made after the claim period mentioned below. 
  8. The animals are not in their original packaging

Live Arrival Guarantee Claim Period: 

For Live Fish and other invertebrates: one and a half hours (1.5 hours) after the posted delivery time. 

For Snails: 48 hours after the posted delivery time. 


Steps to claim Splashy Fish's Live Arrival Guarantee: 

  1. Take a picture of the shipping box and the shipping label. 
  2. For live fish and other invertebrates: Please provide two pictures of each bag (containing the dead fish) upon arrival. Ensure the images display the bag in its original, unopened condition with the original rubber band intact
  3. For Snails: Position the snail in one corner of the tank. If the snail does not move within 48 hours, please take several pictures of the snail's opening
  4. Send an email to with the subject line: DOA and Your Order Number, or message us on social media.
  5. In the body of the email, include your tracking number.
  6. The claim must be sent within the claim period mentioned above.

After submitting the required information, please allow us 1-3 business days to determine the cause of the issue. If the claim is valid and approved by our team, you will

  • Receive a store credit for future purchases, excluding the shipping cost, of the dead-on-arrival fish 

If the Live Arrival Guarantee claim does not meet all listed requirements, Splashy Fish reserves the right to reject it. 

Shipping live animals and plants is a complex process, and temperature plays a crucial role in ensuring the safe and secure delivery of your order.

If the highest daytime temperature in your location and the lowest nighttime temperature here in Springfield, Virginia—where our facility is situated—fall below 40°F or exceed 90°F, we will proactively delay your order. This measure is taken to prioritize the well-being of the animals and plants.

For the safety of our living cargo and to protect your investment, we retain the right to suspend shipping as necessary due to extreme weather conditions. Our Splashy Fish team will assess the situation and determine if it is unsuitable to ship, considering the safety of the animals.

To stay informed or address any questions or concerns, feel free to reach out to our dedicated Splashy Fish Support team via email at

Once our team prints and packs your order, we'll notify you via email. This notification will include your tracking number and the expected arrival day. If you opt for UPS 2 Day shipping, your package should arrive within 2 days after shipment. Similarly, if you choose UPS 1 Day, your order will reach you the day after it is shipped. In the case of orders containing only plants or dry goods, they may be shipped via USPS, provided that this is the selected shipping option during checkout.

We ship all of the customer orders from our warehouse located in Springfield, VA. We pack and ship our orders depending on the orders with the exception of someday we cannot ship out live fish.

All Live Fish orders will be shipped out on Tuesday and Wednesday each week for overnight shipping by UPS.

Monday to Saturday:  We will pack and ship out all orders that do not contain live fish. 

Sunday: (Splashy Day) Today is the day we let our hard-working team members and our fish to destress and ready for the following week's shipment.

For more information regarding about shipping please visit us our Shipping Policy and Schedule

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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 freshwater fish become one of the most popular Medaka Japanese Ricefish for sale in our store. With the attractive color of their bodies, Black Medaka Ricefish is the ideal choice for any aquarium tank. As a schooling fish, it needs to be kept with a group of 6 or more. This not only makes the aquarium tank more attractive but also keeps them from paying too much attention to other species. Although Black Medaka Japanese Ricefish is not picky at food or water parameters, it still needs some specific care requirements.

The Black Medaka Ricefish can grow up to 1.5 inches (4cm) and has attractive eyes with blue or silvery color. There are several types of Medaka Japanese Ricefish based on their colors such as Gold Medaka Japanese Ricefish, Platinum Medaka Japanese Ricefish, etc. In wildlife, they only live for 1 - 2 years but in captivity, they can live up to 5 years.

Although Medaka Japanese Ricefish are not picky eaters, they prefer to be fed with tiny foods that float on the water's surface. This makes them an ideal choice for your outdoor pond. They can consume various foods such as live food, frozen food, and dry food. Remember to balance their diet with different types of fish food such as pellet food to ensure there are not any nutritional deficiencies.

Medaka Japanese Ricefish can be kept in tanks as small as 5 gallons, but a 10-gallon is ideal. Use a sponge filter for your aquarium tank to ensure gentle filtration and prevent them from sticking in the filter. As Medaka Japanese Ricefish is energetic and may jump out of the tank, an aquarium lid or covering the tank with floating plants is a great idea. 

Sexing the Medaka Japanese Ricefish can be done by observing their anal fin. The females are bigger and have a shorter triangle-shaped anal fin while the males have a slender body and a wider anal fin which is shaped like a parallelogram. Medaka ricefish are easy to breed in captivity. Simply provide them with a spawning mop or other spawning medium, and they will do the rest. Their eggs are large about 1.5 mm and have a clear color. When the baby fish develops, it will gradually darken. Fish keepers also can move them to a separate container to prevent other tankmates from incidentally eating them.


- Temperature: 60° - 75° F (16° - 24° C)

- pH Range: 6.5 to 8.0

- KH Range: 9 - 19 dKH

- GH Range: 6 - 20 dGH

- TDS: 100 - 200

- Minimum tank size: 5 gallons, ideally 10 gallons


What are the best tankmates for Black Medaka Ricefish?

The best tankmates for Black Medaka Ricefish are peaceful, small fish that inhabit similar water parameters. Some suitable tankmates include Cardinal Tetras, Cherry Barbs, and Ghost Shrimp.

How do Medaka eggs look like?

Medaka eggs are small, round, and transparent. They are usually attached to plants or other surfaces in the water.

What are the differences between Medaka Ricefish females and males?

Medaka Ricefish females are typically larger and rounder than males. They also have a more pronounced dorsal fin and a shorter anal fin. Males, on the other hand, are more slender and have a longer anal fin.

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