Recommendations for Common and Easy-to-Keep Coldwater Ornamental Fish Species

There are many species of fish, some for eating and some for viewing. Among ornamental fish, many people like to keep coldwater ornamental fish. So do you know what coldwater ornamental fish species there are? Let's learn about them below.

1. Goldfish

Goldfish are colorful, gentle in temperament, and diverse in variety, and are deeply loved. Goldfish are ectothermic animals and are fairly adaptable to water temperature, but the most suitable temperature is between 20-28°C. Domestic goldfish can be fed with earthworms, white sesame seeds, water fleas, earthworms, mealworms, green worms, leather worms, and so on.

2. Koi

Koi have a robust physique, bright colors, varied patterns, and a majestic swimming posture. They are gentle by nature, carry excellent symbolism, and have very high ornamental and keeping value. Koi like to swim in groups and are highly adaptable to water temperature. They can live in water temperature environments of 5-30°C, with the most suitable growth water temperature being 21-27°C, and are suited to living in water quality environments that are slightly alkaline and low in hardness.

3. Rock-climbing loach

The rock-climbing loach is a small bottom-dwelling fish. During keeping, the dissolved oxygen content in the fish tank should be kept sufficient, and some water flow should be created as much as possible to simulate its original living environment. At the same time, the water temperature should be kept from exceeding 28°C as much as possible.

4. Chinese fighting fish

The Chinese fighting fish is the most common type of fork-tailed fighting fish. It likes to move in shallow puddles or on banks with dense aquatic plants. It has a beautiful appearance and beautiful colors and can be used as an ornamental fish. Chinese fighting fish have no strict requirements for water quality. They can grow well even in dirty water at 20-25 degrees Celsius. Generally, they can survive within 4-31°C, and 24-27°C is the most suitable for their growth.

5. Medaka for top-viewing

Medaka for top-viewing are relatively small, with a body length of about 3-4 cm, and are brightly colored and highly varied, with extremely high ornamental value. The various varieties of top-viewing medaka are distinguished by color, body shape, light expression, and so on. There are many varieties, and feeding and breeding are simple. Top-viewing medaka are upper-layer fish, omnivorous, and gentle by nature. The suitable growth temperature is 15-30°C, and they are extremely sensitive to chemicals.

6. Gar

Gar are large, ferocious carnivorous fish. If kept artificially, the water temperature requirement is 20-26°C, and the water quality requirement is not strict, but they are difficult to breed in aquariums. The food eaten by gar is mainly carnivorous. They can be fed loaches, small fish and shrimp, breadworms, and so on. As much as possible, ensure the food fed contains high protein.

7. Bitterling

The bitterling is a native coldwater fish. It has many subspecies, and the phenotypes among each subspecies are different. In particular, the rare volcano bitterling has especially striking colors. Bitterlings are very easy to keep and also have high collection value.

The above are several common and easy-to-keep coldwater ornamental fish. People who like keeping fish generally give priority to choosing these. Do you have anything to add about coldwater ornamental fish species?

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