Care Guide for Pompon Goldfish | Nasal Sac Care, Gentle Water Flow Management, Feeding and Disease Prevention | ブリちょく
Goldfish| ✍️ BreederDirect Editorial
Care Guide for Pompon Goldfish | Nasal Sac Care, Gentle Water Flow Management, Feeding and Disease Prevention
A comprehensive guide to caring for pompon goldfish (hanafusa goldfish), in which the nasal septum develops into delicate petal-like growths. Learn practical care methods to protect their fragile nasal sacs: setting gentle water flow, selecting substrate, and proper handling techniques. Discover daily observation tips for spotting abnormalities and feeding management strategies to prevent swim bladder disease.
Key Takeaways
A comprehensive guide to caring for pompon goldfish (hanafusa goldfish), in which the nasal septum develops into delicate petal-like growths. Learn practical care methods to protect their fragile nasal sacs: setting gentle water flow, selecting substrate, and proper handling techniques. Discover daily observation tips for spotting abnormalities and feeding management strategies to prevent swim bladder disease.
What are Pompon Goldfish?
✍️
BreederDirect Editorial
The BreederDirect editorial team specializes in care information for animals, covering veterinary care and breeding to deliver beginner-friendly guides.
Find Goldfish on BreederDirect
Buy directly from verified breeders
Browse Related Listings
Find Goldfish listings related to this article on BreederDirect. Buy directly from verified breeders.
Pompon goldfish (hanafusa goldfish) are a unique variety in which the nasal septum undergoes abnormal development, forming petal-like growths called "nasal sacs." Known in China as "rongqiu goldfish" (pompon goldfish), when viewed from the front, these goldfish display distinctively large, frilly nasal sacs that spread across both sides of the head.
Key Characteristics of Pompon Goldfish
Item
Description
Nasal Sac
The nasal septum develops into petal-like formations. Shape varies significantly between individuals
Body Type
Round to egg-shaped (most are hybrids with Ryukin or Oranda varieties)
Eyes
Can be either normal or protruding
Tail Type
Quadruple tail (calico tail), triple tail, butterfly tail, etc.
Difficulty Level
Intermediate to Advanced (nasal sac management requires special care)
Pompon goldfish nasal sacs are extremely delicate, and injury can lead to necrosis or infection. These rewarding fish require careful tank setup and daily observation.
Setting Up the Aquarium Environment
Tank Size and Water Flow
The most critical concern for pompon goldfish is water flow strength. Strong currents not only damage the nasal sacs but also disrupt the fish's swimming balance.
Recommended Tank Size
Single fish: 45–60 cm tank (60 liters or more)
Multiple fish (3–5): 90–120 cm tank recommended
Choosing a Filter
Filter Type
Rating
Hang-on Filter (weak flow setting)
Recommended. Install an outlet pipe to direct flow toward the tank wall
Sponge Filter
Ideal for very weak flow, but limited biological filtration capacity
Canister Filter
Must use a diffuser or outlet pipe to disperse flow
Undergravel/Airstone Filter
Easy to use in small single-fish tanks
Strong water flow is a no-go. Direct the outlet toward the water surface or along the tank wall to reduce flow.
Substrate
Use fine sand (1–3 mm grain size) or a bare-bottom tank. Coarse gravel can catch the nasal sacs and cause injury.
Water Temperature and Chemistry
Parameter
Recommended Range
Temperature
59–79°F (summer: below 82°F, winter: above 50°F)
pH
7.0–8.0 (slightly alkaline)
Hardness
10–15°GH
Ammonia
0 mg/L
Nitrite
0 mg/L
Nasal Sac Care and Observation
Normal vs. Abnormal Nasal Sacs
Healthy nasal sacs feel soft and fluffy and are typically white, cream-colored, or reddish.
Signs of Abnormality
Darkening or ulceration of the nasal sac (early necrosis)
Redness and swelling (possible bacterial infection)
One-sided withering or loss of tissue
White, cotton-like growths on the tips (fungal infection)
Tips for Preventing Nasal Sac Injury
Keep the layout simple: Avoid sharp stones and protruding driftwood. Glass decorations with sharp edges are dangerous
Be cautious with tankmates: Some fish may nip at the nasal sacs. Even same-species or same-sized companions require monitoring
Proper netting technique: Use a net with a wide opening (12 cm or more) to avoid catching the nasal sacs when removing the fish
Managing Minor Damage
For minor damage such as slight nicks or mild redness, salt baths (0.3–0.5%) can promote natural healing. If necrosis is spreading, consult a fish veterinarian.
Feeding Management
Pompon goldfish have wide vision and can sense food by smell, but the nasal sacs may reduce their ability to detect odors. Sinking pellets and moistened sinking flakes are ideal, as they allow the fish to feed without exposing the nasal sacs to the air.
Recommended Foods
Sinking goldfish pellets (main diet)
Thawed frozen bloodworms or brine shrimp (supplemental food 2–3 times per week)
Blanched spinach or shelled peas (aids digestion)
Floating foods are problematic because the fish must surface, exposing the nasal sacs to air and risking drying or damage. We strongly recommend using sinking foods.
Feeding Guidelines
Feed twice daily, amounts that can be consumed in 2–3 minutes. Avoid overfeeding to prevent swim bladder disease.
Preventing Swim Bladder Disease
Swim bladder disease is common in round-bodied goldfish and poses a risk to pompon goldfish as well.
Prevention Strategies
Avoid overfeeding (especially floating foods)
Prevent temperature fluctuations (especially below 59°F)
Implement fasting days (about once per week)
Avoid complete water changes; do partial changes of 1/3–1/2 regularly
Breeder-Specific Management
Selecting for Nasal Sac Quality
For pompon goldfish breeders, the most critical selection criteria are nasal sac form, size, and bilateral symmetry.
Large nasal sacs that develop equally on both sides are highly valued
Petal-like formations at the tips score higher in shows
Nasal sacs grow larger over time, so staged evaluation of juveniles is essential
Breeding and Fry Management
Breeding pompon goldfish follows the same methods as other varieties. Fry do not develop nasal sacs initially; the characteristic forms gradually appear from 3 to 6 months of age.
Pompon goldfish are a uniquely rewarding breed precisely because of their distinctive appearance and the delicate care they require. Take pleasure in careful observation while maintaining vigilant attention to water flow and nasal sac care, and enjoy raising these remarkable fish.
