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98 results for “goldfish health”
Red Goose-Head Goldfish with Narial Bouquets
The Red Goose-Head Goldfish with Narial Bouquets is a recently developed goldfish variety with a red body and a head growth limited to the top, plus nasal pom-poms. The red-pompom form is especially popular. Eurythermal and easy to keep, it tolerates 0-38°C but not sudden temperature swings.
Black Bubble Eye Goldfish with Dorsal Fin
The Black Bubble Eye Goldfish with Dorsal Fin is an all-black variety of bubble-eye goldfish that first appeared around 1982, prized when its color is as deep as ink. Unlike tailless bubble eyes, it retains a normal dorsal fin. Its fluid-filled eye sacs are delicate and require careful handling and stable water conditions.
Goldfish
The goldfish (Carassius auratus), native to China, is the world's oldest ornamental fish with more than 125 varieties. This guide covers its taxonomy, body and head shapes, care, tank environment, and feeding.
How do goldfish breed?
Breed goldfish with a 1:2 male-to-female ratio in a planted tank at 18-25°C; remove the male right after fertilization and hatch eggs in 3-7 days.
Will goldfish kept at home breed on their own?
Home goldfish can breed naturally if both sexes are present and healthy. Here is the timing and conditions.
What happens if an aquarium’s water temperature suddenly rises?
Temperature-sensitive fish may suffer heat stress, even death. Warmer water holds less oxygen and fuels bacterial and algal blooms, worsening water quality.
How to Prevent Swim Bladder Disease in Ornamental Fish
Swim bladder disease is common in ornamental fish; prevent it by controlling temperature and water quality. Many cases follow water changes with big temperature gaps — keep new and old water within about 2°C. If a fish loses buoyancy, isolate it in shallow water with a little salt, feed less, and if needed add a buoyancy aid.
Wuhan Lion Cat
The Wuhan Lion Cat is a goldfish variety with a short, round body whose eyes and mouth are covered by developed head growths, so it is prone to 'head-droop'. It belongs to the Lionhead type.
White Oranda with Five Red Fins
The White Oranda with Five Red Fins is a goldfish variety whose body is all silvery-white while each fin is bright red, making it very distinctive and gradually gaining acceptance among goldfish fans.
Siamese Tiger Fish
In its native Thailand, the Siamese Tiger Fish is a food fish and a rather prized one. Thanks to its distinctive shape and striking pattern, it has become a very popular ornamental fish in recent years. Most specimens seen in the domestic aquarium market reach China via Singapore from Thailand.