Goshiki

Goshiki key facts

Care level

Beginner-friendly

Lifespan

2-3 years

Size

Body length 3-4cm

Temperature

15〜28℃

Diet

Mainly prepared feed, supplemented with live food (brine shrimp, daphnia); fine powdered food for fry.

Coloration & Traits

Two-tone black and orange with transparent scales; an unbroken 'black rim' nets the whole body, with scarlet in the fins and flanks.

Care Tips

Hardy and easy; grows well in outdoor tubs, and the black-orange contrast looks crisper under sunlight.

Water Quality & Temperature

Keep around 15-28°C; avoid summer overheating and sudden changes, and keep water stable.

Breeding

Breeds easily, spawning steadily in warmer months; select parents with dense black rim to refine the trait.

Cautions

It shows almost no background reaction, so color holds even in white containers, making it easy to display anywhere; derivatives like Type R (scarlet reaching the head) also exist.

About Goshiki

Goshiki is an improved medaka with a striking black-and-orange "black rim" pattern. Beginner-friendly, growing to 3-4cm with a 2-3 year lifespan.

7 things to know before welcoming a Goshiki

1. 1Pattern varies by individual

   The way the black rim and red-orange coloring appear differs from fish to fish. Even siblings from the same parents can show different shading and balance, so keeping several side by side lets you appreciate the variation.

2. 2Beginner-friendly care level

   Goshiki is rated as beginner-friendly among improved medaka varieties. As long as you keep up with basic water changes and temperature management, it's a manageable choice even for first-time medaka keepers.

3. 3Adult size of 3-4cm

   Adults stay compact at around 3-4cm in body length. Choose a container with enough water volume for the number of fish to avoid overcrowding.

4. 4Lifespan of about 2-3 years

   Goshiki has a lifespan of roughly 2-3 years. Since you'll be caring for them over that span, it helps to set up an environment where water quality and temperature management are sustainable long-term.

5. 5Watch for temperature swings

   Medaka are hardy enough for outdoor keeping, but water temperature can swing quickly during seasonal transitions. Avoiding sudden temperature changes and acclimating fish gradually helps keep them in good condition.

6. 6Setup that shows off the coloring

   The contrast between black and orange can look different depending on container color, substrate, and light exposure. Observing them in a calm, stable environment helps bring out the black rim and red-orange coloring.

7. 7What to prepare before bringing them home

   Prepare basic supplies in advance — a tank or outdoor container, dechlorinated water, and food. When introducing them to a new environment, acclimating them gradually to the water reduces stress.

Frequently asked questions about Goshiki

Q.Can beginners keep Goshiki?

A.Yes, Goshiki is rated as beginner-friendly. As long as you maintain basic water changes and temperature management, it's manageable even for those new to medaka keeping.

Q.How big does Goshiki grow?

A.Adults reach about 3-4cm in body length, a compact size that's easy to manage among improved medaka varieties.

Q.How long can I expect to keep a Goshiki?

A.The lifespan is roughly 2-3 years. Keeping up with regular water quality and temperature management helps them thrive throughout that time.

Q.What does the name "Goshiki" refer to?

A.Goshiki is the name of this improved medaka variety, defined by a black-and-orange base color with a "black rim" pattern outlining the scales across the body — a pattern that's popular on the show circuit.

Q.Do I need any special permit to keep Goshiki?

A.Goshiki is not subject to CITES. For general guidance on keeping medaka, please also check with your retailer or local authority.

Useful tools for Goshiki care

Learn more about Goshiki in the encyclopedia

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