Wakin Goldfish
The Wakin is Japan's everyday treasure - a single-body, DOUBLE-tailed pond goldfish that swims almost as strongly as a Comet while flying twin flags behind it.
🗓️ Last reviewed: July 2026
Overview
The Wakin is Japan's everyday treasure - a single-body, DOUBLE-tailed pond goldfish that swims almost as strongly as a Comet while flying twin flags behind it. The traditional goldfish of Japanese ponds, it bridges the single/fancy divide: hardy, fast, pond-proof, yet fancy-tailed.
Natural History
Descended from the first goldfish to reach Japan from China (1500s); 'Wakin' means simply 'Japanese goldfish' - the default fish of temple ponds and garden tubs for centuries.
Appearance
Elongated hardy body to 25-30 cm with a double (sometimes triple/quad-lobed) tail; classic red, red-white (prized in bold patterns), and calico-adjacent forms.
Tank Size & Setup
Pond-first like Comets - or 200+ liter tanks; strong swimmers needing space, oxygen and filtration. Hardy in temperate ponds year-round.
Water Parameters
10-24°C cold-water, robust filtration, generous changes - single-tail rules despite the fancy tail.
Diet
Goldfish staples plus greens; pond Wakins forage happily and grow impressively.
Health & Lifespan
Average lifespan is 10-15 years. 10-15 years, often more in ponds; hardy as their single-tail cousins with none of the egg-body fragilities.
Pros & Cons
Pros
- Pond-hardy AND double-tailed
- Fast, robust, long-lived
- Beautiful from above (pond view)
- Bridges both goldfish worlds
Cons
- Too big/active for small tanks
- Outcompetes fancies - house apart
- Less common in western shops
- Plain-bodied vs exotic fancies
Wakin Goldfish - frequently asked questions
Wakin or Comet for my pond?
Both excellent: Comet streams a long single tail, Wakin flies a double one and reads beautifully from above - the traditional Japanese pond choice.
Can Wakins live with fancy goldfish?
No - they're too quick at dinner. House them with Comets, Shubunkins and koi-adjacent company instead.
Are they rare?
Common in Asia, less so in western pet trade - pond-keeper circles and specialist breeders are the reliable source.
🧠 Test yourself: guess the fish
Three clues from our quiz bank, each about another of our fish. Can you name them?
Clue 1.This peaceful armored aquarium fish gulps air from the surface and breathes part of it through its gut.
It's the Corydoras Catfish - read the full profile →
Clue 2.This tiny schooling fish glows with an iridescent blue stripe and a red streak along its rear half.
It's the Neon Tetra - read the full profile →
Clue 3.Some species of this small, brilliantly colored fish lay eggs that survive dried mud until rains return.
It's the Killifish - read the full profile →