Gradio Longfin Medaka
Premium Japanese medaka. Cold-tolerant outdoor pond fish.
Join the waitlist
Colony establishing — available Q1 / Q2 2027. Waitlist subscribers hear first.
Email signup opens soon — this form goes live as soon as our list is connected.
All live fish and shrimp are guaranteed to arrive alive. If any arrive dead, contact us within 2 hours of delivery confirmation with a clear photo of the deceased animal in the unopened bag, and we issue a replacement or store credit — your choice. Void if delivery is refused, the address is incorrect, or the package is left unattended in extreme temperatures. Full terms →
Care At a Glance
- Tank Size
- 10 gallon minimum
- pH
- 7.0 – 8.0
- Temperature
- 60 – 78°F (cold tolerant)
- Hardness
- GH 8-12
- Feeding
- 2 times daily, small portions
- Compatibility
- Peaceful, ideal for outdoor tubs and ponds
Premium Japanese medaka rice fish. Gradio longfin is one of the most striking medaka varieties available. Cold-tolerant — perfect for outdoor ponds and patio setups year-round. Very few domestic US sources.
Strain type: Medaka / Ricefish
| Tank Size | 10 gallon minimum |
|---|---|
| pH | 7.0 – 8.0 |
| Temperature | 60 – 78°F (cold tolerant) |
| Hardness | GH 8-12 |
| Feeding | 2 times daily, small portions |
| Compatibility | Peaceful, ideal for outdoor tubs and ponds |
USPS Priority Mail Express, overnight delivery to most US locations.
- Ships Tuesday and Wednesday only so animals never sit over a weekend
- Medium Flat Rate box, rigid foam insulation, Life Support Breather Bags, heat or cold pack by season
- Tracking emailed at ship time — someone must receive the package
- Summer (June–September): cold pack included; shipments may hold during heat advisories