Cyprinids (Cyprinidae)

Pompon Goldfish

Carassius auratus

A form of:Goldfish

The true history of the origin of Goldfish remains somewhat unclear. Nevertheless, only two countries are often cited as their possible ancestral home: Japan and China. Pompon-type goldfish have a unique characteristic — noticeably enlarged nasal septa, which are usually almost invisible. These form distinctive growths on the nose, varying in size and shape.

Tank
from 110 L (29 gal)
Temperature
18 – 22 °C (64 – 72 °F)
Size in aquarium
15 cm (5.9 in)
Acidity
pH 6–8

Dangerous to small fish

Natural rangeRange on the map
  • East Asia area
  • China
  • Korea
  • Japan

Tank conditions

Plan the tank stocking
Temperature
18 – 22 °C (64 – 72 °F)
Water pH
Slightly acidic (6) – Slightly alkaline (8)
Water dH
Soft (5) – Very hard (19)
Water salinity
no salt (freshwater)
Size in aquarium
15 cm (5.9 in)
Lifespan
15 years
Temperament
Semi-peaceful dangerous to smaller ones
Toward small fish
a risk to small fish
Required aquarium volume
from 110 L (29 gal)
Body type
short-bodied
Lighting
moderate (regular)
Substrate
any (no restrictions)
Water flow
none or stagnant (no flow)
Swimming level
middle level
Feeding
Any (universal)
Keeping
Pair (male/female)
Jumping
low
  • Lifespan. A lifespan to expect under good care, not a measured value: it depends heavily on tank volume, water quality and diet — and for selectively bred forms, on their origin as well.
  • Toward small fish. Based on the Predators category in the catalog or the temperament in the species parameters. “A risk to small fish” means the species is not a predator by habit, yet will swallow any fish that fits in its mouth.
  • Required aquarium volume. This is a husbandry recommendation, not a measured value: the volume depends on the keeping mode (pair (male/female)), footprint, decor and tank mates.
  • Body type. A shortened, egg-shaped body displaces the swim bladder: such a fish swims slowly, loses food to faster tankmates and copes worse with cold and sharp swings. It is not left outdoors to overwinter.

Care and keeping

Description

The Pompon Goldfish is a selectively bred, short-bodied form of goldfish characterized by fleshy growths near the nostrils, resembling fluffy pompons. These formations develop from the nasal septa and can reach 10 mm in diameter. The fish's body is rounded, and the back is usually smoothly curved. Depending on the breed standard, the dorsal fin may be absent, while the anal and caudal fins are always bifurcated. Adults reach 15–16 cm in length. Coloration is varied, with contrasting combinations of body color and growths being highly prized.

Habitat

This species is not found in natural conditions, as it is the result of centuries of selective breeding of the silver crucian carp. The fish are fully adapted to life in artificial reservoirs and require constant human care. They are unable to survive in nature with such a body shape and specific growths.

Behavior and Compatibility

Peaceful and calm fish, exhibiting low activity compared to their wild relatives. It is recommended to keep them in a group of several individuals, as they may experience stress when alone. They are compatible only with slow-moving and calm tank mates; active fish species may nip their fins and delicate nasal growths.

Care and Maintenance

For keeping, a spacious aquarium of at least 100 liters for a pair of individuals is required. Powerful filtration and regular water changes are important, as these fish produce a lot of organic waste. It is recommended to use large, rounded substrate that the fish cannot swallow while searching for food. Plants with tough leaves and a strong root system are preferred, as the fish may damage delicate greenery.

Diet

An omnivorous species. The diet should include specialized dry foods for goldfish, as well as vegetable supplements: lettuce leaves, spinach, or duckweed. Feeding should be done in small portions 2–3 times a day. It is important to monitor the quality of nutrition to prevent digestive problems, which are characteristic of short-bodied breeds.

Breeding and Reproduction

Breeding is possible in home aquariums but requires preparation of the parent fish. Spawning is stimulated by increasing water temperature and simulating a spring period. Eggs are laid on fine-leaved plants. After spawning, the parent fish should be removed to prevent them from eating the eggs. Fry are fed specialized starter foods.

Diseases

They are most susceptible to diseases of the digestive system and swim bladder, which are often associated with improper feeding or poor water quality. Injuries to the head growths can also occur from contact with sharp decor. Prevention involves maintaining cleanliness in the aquarium and a balanced diet.

How to choose

When choosing, attention should be paid to the fish's activity and the cleanliness of its skin. Healthy individuals should have symmetrical growths on their heads, clean fins without signs of damage or film, and a rounded body shape without indentations. Avoid purchasing fish with signs of lethargy, damaged growths, or an unnaturally bloated abdomen.

Compatibility

There are no pair reviews for this species yet — check tankmates in the matcher.

All tankmates

Plants and this fish

Matching water does not mean the plant will stay intact.

Frequently asked questions

The essentials: size, tank volume, water parameters and care

How big does Pompon Goldfish get?

An adult reaches 15 cm in length. Plan the tank around the maximum size: the fish quickly outgrows a cramped setup.

What size aquarium does Pompon Goldfish need?

The recommended volume is 110 L. A smaller tank speeds up nitrate build-up and raises stress levels.

What water parameters does Pompon Goldfish need?

Temperature 18–22 °C, pH 6–8, hardness 5–19 dGH. Stability matters more than exact values: sudden swings are harder on the fish than a small deviation from the ideal.

How long does Pompon Goldfish live?

Around 15 years when kept properly. Lifespan depends directly on tank volume, water quality and a varied diet.

Is Pompon Goldfish aggressive?

Temperament: semi-peaceful (dangerous to smaller ones). Not a predatory species, but small fish that fit in its mouth will eventually be eaten.

How many Pompon Goldfish should be kept together?

Recommended setup: pair (male/female). Ignoring this is a common cause of stress and disease.

What does Pompon Goldfish eat?

Diet type: any (universal). Feed small portions that are finished within a couple of minutes — overfeeding does more harm than underfeeding.

What is the scientific name of Pompon Goldfish?

The scientific name of the species is Carassius auratus, family Cyprinids (Cyprinidae). It also appears in the literature as: Carasius auratus, Carassius buergeri, Carassius burgeri.

Similar fishes

Matched by family, categories and overlapping keeping conditions

Fantail Goldfish

Fantail Goldfish

Carassius auratus

Cyprinids (Cyprinidae)

Among the decorative species of aquarium fish, Fantail Goldfish and their Japanese counterparts, Ryukin, hold a special place. These fish are specifically bred for various exhibitions, showcasing their unique beauty.…

Jikin

Jikin

Carassius auratus

Cyprinids (Cyprinidae)

Among the many varieties of Goldfish, the Jikin is the rarest. It is almost impossible to find in amateur aquariums, as its distribution has been significantly restricted since 1958, when it was listed as a protected…

Black Moor Goldfish

Black Moor Goldfish

Carassius auratus

Cyprinids (Cyprinidae)

Among the varieties of Telescope Goldfish, the Black Moor stands out, known as the Black Moor Goldfish. This fish is easily recognized by its short, rounded or egg-shaped body and characteristic large eyes that…

Nankin

Nankin

Carassius auratus

Cyprinids (Cyprinidae)

This distinctive goldfish variety emerged between 1748 and 1750, developed in the Izumo region of Japan, now known as Shimane Prefecture. Despite its Japanese origin, the fish's name has deep Chinese roots. Many…

Other scientific names and conservation status

Other scientific names
Carasius auratus, Carassius buergeri, Carassius burgeri, Carassius carassius, Carassius chinensis, Carassius coeruleus
Categories
Goldfish, Cold-water
Conservation status
Least concernLC