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Nishiki Black & Yellow Medaka Rice Fish (Oryzias latipes)

$1499 CAD
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SKU: 27753591021694

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Nishiki Black & Yellow Medaka Rice Fish (Oryzias latipes)

Description

Nishiki Black & Yellow Medaka (Oryzias latipes) is a striking ornamental variety of Japanese rice fish prized for its bold contrast and ease of care. 

Appearance

  • Coloration: Deep black body with bright yellow/gold patches or overlay
  • Pattern: Can vary—some show mottled “koi-like” patterns; others have cleaner contrast
  • Size: ~3–4 cm (1.2–1.6 inches) adult length
  • Body type: Slender, torpedo-shaped with subtle metallic sheen

Origin & Background

  • Derived from selectively bred Japanese medaka strains
  • “Nishiki” generally refers to multicolored or ornamental lines, similar in naming style to koi varieties
  • Species: Oryzias latipes (native to Japan, Korea, and China)

Care Requirements

Tank / Container

  • Minimum: 5 gallons (larger groups preferred)
  • Can also thrive in:
    • Outdoor tubs
    • Patio ponds
  • Gentle filtration recommended, but not mandatory in planted setups

Water Parameters

  • Temperature: 10–28°C (50–82°F) — very hardy
  • pH: 6.5–8.0
  • Hardness: Adaptable (soft to moderately hard)

Lighting

  • Bright lighting enhances yellow coloration
  • Sunlight (for outdoor setups) brings out best contrast

Diet

  • Omnivorous and easy to feed:
    • High-quality micro pellets or flakes
    • Live/frozen foods (brine shrimp, daphnia, mosquito larvae)
  • Color-enhancing foods will intensify yellow tones

Behavior & Compatibility

  • Peaceful and social schooling fish
  • Best kept in groups (5–10+)
  • Compatible with:
    • Other medaka varieties
    • Small peaceful species
  • Avoid keeping with aggressive or fin-nipping fish

Breeding

  • Extremely easy to breed:
    • Females carry eggs attached near the vent briefly before depositing
    • Spawning occurs almost daily in warm conditions
  • Provide:
    • Floating plants or spawning mops
  • Eggs hatch in ~7–14 days depending on temperature

Why They’re Popular

  • Hardy (great for beginners and outdoor setups)
  • Unique black & yellow contrast uncommon in many small fish
  • Active and visible swimmers
  • Breed readily, making them ideal for hobbyists and breeders

Tips for Best Color

  • Keep in dark substrate tanks or tubs
  • Provide natural sunlight when possible
  • Feed varied, high-quality diet
  • Avoid mixing with too many other strains if you want to preserve coloration

Specifications
  • Category
    Ornamental Fish
  • Species Type
    Ricefish
  • Water Temperature
    68°F to 75°F
  • Water pH Level
    Alkaline, Neutral
  • Habitat Preference
    Planted Tanks, Rocky Tanks, Driftwood
  • Behaviour
    Community Fish

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Mister Aqua Thailand

Nishiki Black & Yellow Medaka Rice Fish (Oryzias latipes)

$1499 CAD

Nishiki Black & Yellow Medaka (Oryzias latipes) is a striking ornamental variety of Japanese rice fish prized for its bold contrast and ease of care. 

Appearance

  • Coloration: Deep black body with bright yellow/gold patches or overlay
  • Pattern: Can vary—some show mottled “koi-like” patterns; others have cleaner contrast
  • Size: ~3–4 cm (1.2–1.6 inches) adult length
  • Body type: Slender, torpedo-shaped with subtle metallic sheen

Origin & Background

  • Derived from selectively bred Japanese medaka strains
  • “Nishiki” generally refers to multicolored or ornamental lines, similar in naming style to koi varieties
  • Species: Oryzias latipes (native to Japan, Korea, and China)

Care Requirements

Tank / Container

  • Minimum: 5 gallons (larger groups preferred)
  • Can also thrive in:
    • Outdoor tubs
    • Patio ponds
  • Gentle filtration recommended, but not mandatory in planted setups

Water Parameters

  • Temperature: 10–28°C (50–82°F) — very hardy
  • pH: 6.5–8.0
  • Hardness: Adaptable (soft to moderately hard)

Lighting

  • Bright lighting enhances yellow coloration
  • Sunlight (for outdoor setups) brings out best contrast

Diet

  • Omnivorous and easy to feed:
    • High-quality micro pellets or flakes
    • Live/frozen foods (brine shrimp, daphnia, mosquito larvae)
  • Color-enhancing foods will intensify yellow tones

Behavior & Compatibility

  • Peaceful and social schooling fish
  • Best kept in groups (5–10+)
  • Compatible with:
    • Other medaka varieties
    • Small peaceful species
  • Avoid keeping with aggressive or fin-nipping fish

Breeding

  • Extremely easy to breed:
    • Females carry eggs attached near the vent briefly before depositing
    • Spawning occurs almost daily in warm conditions
  • Provide:
    • Floating plants or spawning mops
  • Eggs hatch in ~7–14 days depending on temperature

Why They’re Popular

  • Hardy (great for beginners and outdoor setups)
  • Unique black & yellow contrast uncommon in many small fish
  • Active and visible swimmers
  • Breed readily, making them ideal for hobbyists and breeders

Tips for Best Color

  • Keep in dark substrate tanks or tubs
  • Provide natural sunlight when possible
  • Feed varied, high-quality diet
  • Avoid mixing with too many other strains if you want to preserve coloration
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