# Fancy Goldfish Breeds: The Complete Comparison Guide

Goldfish are the classic beginner fish โ€” and the most misunderstood. The common goldfish sold for 50 cents in a bag grows into a 12-inch pond fish. Fancy goldfish are a different family: selectively bred for round bodies, flowing fins, and bizarre head growths. They cannot compete with common goldfish (too slow, too delicate) and they cannot survive in bowls (too much waste, too little water). But kept properly, a fancy goldfish is one of the most beautiful and personable fish you can own โ€” some live 15-20 years and learn to eat from your hand.

This guide compares the most popular fancy breeds so you can pick the right one โ€” and understand the price differences before you buy.

The Fancy Goldfish Family Tree

All fancy goldfish descend from the same wild carp as common goldfish, but hundreds of years of selective breeding in China and Japan created distinct body types. The two big families:

FamilyBody shapeExample breeds
Egg-shaped (ryukin-type)Round, deep bodyRyukin, Fantail, Pearlscale, Black Moor
Ranchu-typeEgg-shaped + no dorsal finRanchu, Lionchu, Bubble Eye

Breed-by-Breed Comparison

Fantail โ€” The Best Starter Fancy

The hardiest fancy breed. Egg-shaped body, a split caudal fin, no head growth. Tolerates mistakes better than any other fancy.

PriceSizeDifficultyTemp range
$5-126-8 inBeginner65-75ยฐF

Verdict: If you want a fancy goldfish but have never kept one, get a Fantail.

Ryukin โ€” The Humpback

Japan's classic fancy. High arched back, long flowing fins, comes in red, calico, and orange. More active than Ranchus, slightly hardier than Orandas.

PriceSizeDifficultyTemp range
$8-258-10 inBeginner-Intermediate65-75ยฐF

Verdict: Great middle ground โ€” prettier than a Fantail, tougher than an Oranda.

Black Moor โ€” The Telescope

All-black telescoping eyes, rounded body, velvety color. The black fades to bronze in warm water or with age. Poor eyesight means they need soft decor and gentle tank mates.

PriceSizeDifficultyTemp range
$5-156-8 inBeginner65-72ยฐF

Verdict: Charming and hardy, but keep only with slow, peaceful tank mates โ€” their eyes are fragile.

Oranda โ€” The Crown Jewel

The most popular fancy breed in the world. The "wen" โ€” a fleshy raspberry-like growth on the head โ€” develops from 4-6 months. Red caps (red head growth, white body) are the most sought-after color.

PriceSizeDifficultyTemp range
$10-50 (pet store)8-10 inIntermediate68-75ยฐF
$50-300+ (show quality)

Verdict: The showstopper of the goldfish world. The wen needs clean water โ€” poor conditions cause wen infections.

Ranchu โ€” The King of Goldfish

Japan's "king of goldfish." No dorsal fin, a smooth curved back, deep body, and a massive wen. Judges in Japan evaluate Ranchu on body curve, head growth, and tail angle. They are slower and more delicate than Orandas.

PriceSizeDifficultyTemp range
$20-100 (pet store)8-10 inIntermediate-Advanced65-72ยฐF
$200-500+ (show quality)

Verdict: For the committed keeper. Gorgeous, but the most demanding fancy breed.

Pearlscale โ€” The Golf Ball

Round, golf-ball body with domed, pearl-like scales. The scales are the attraction โ€” and the weakness. Their round body crowds internal organs, making them prone to swim bladder issues. Very sensitive to water quality.

PriceSizeDifficultyTemp range
$8-305-7 inIntermediate-Advanced68-75ยฐF

Verdict: Beautiful but fragile โ€” not for beginners.

Bubble Eye โ€” The Delicate One

Fluid-filled sacs under the eyes that wobble as it swims. The sacs are extremely fragile โ€” sharp decor, rough tank mates, and net handling can rupture them. No dorsal fin.

PriceSizeDifficultyTemp range
$10-405-7 inAdvanced65-72ยฐF

Verdict: For experienced keepers only. Never net a bubble eye โ€” use a cup.

Fancy vs Common Goldfish: Never Mix

FactorCommon goldfishFancy goldfish
BodySleek, torpedo-shapedRound, egg-shaped
SpeedFast, activeSlow, deliberate
Temperature60-75ยฐF (very hardy)68-75ยฐF (warm-sensitive)
Tank40+ gallons, grows 12 in20+ gallons, 6-10 in
CompanionsOther commonsOther fancies

Never keep fancies with commons. The common goldfish will out-compete them for food and out-swim them โ€” the fancy starves despite the tank being full of food. This is a classic aquarium tragedy.

Tank Requirements (Non-Negotiable)

Tank sizeStocking
20 gallonsOne fancy goldfish
30 gallonsTwo fancies
40 gallonsThree fancies
10 gallons per fishRule of thumb beyond 3

Fancy goldfish produce massive amounts of waste โ€” their round bodies are mostly digestive system. Filtration must be rated 2-3x the tank volume, and weekly water changes of 25-30% are mandatory. A cycled filter is essential โ€” see the nitrogen cycle guide.

Feeding Fancy Goldfish

  • Staple: sinking goldfish pellets (Hikari, New Life Spectrum) โ€” soaked 5 minutes first
  • Treats: frozen bloodworms, brine shrimp, blanched peas (for digestion)
  • Frequency: 2-3 small meals daily, only what they eat in 2 minutes
  • Avoid: flakes (they gulp air โ€” swim bladder issues), overfeeding (the #1 killer)
  • Common Health Issues by Breed

    BreedCommon issuePrevention
    Oranda/RanchuWen infectionClean water, check head growth weekly
    Pearlscale/Bubble EyeSwim bladderSoak food, no flakes, stable temp
    All fanciesConstipation1 fasting day/week, peas as treat
    All fanciesFin rotWater quality + temperature stability

    Which Breed Should You Get?

    Your situationBest pick
    First fancy goldfishFantail or Black Moor
    Want the classic lookOranda (red cap)
    Want a challengeRanchu
    Small tank (20g)Single Fantail or Black Moor
    Show quality budgetBreeder Ranchu or Oranda

    Bottom Line

    Fancy goldfish are living art โ€” centuries of breeding compressed into a fish that swims like a water balloon with fins. They reward patient keepers with years of personality and beauty. Pick a breed that matches your experience, give it 20+ gallons of cycled, filtered water, feed sinking pellets with restraint, and you will have a pet that outlives most dogs.