How to Care for a Telescope Fish as a freshwater aquarium fish

How to care for a telescope fish?

The telescope fish, also known as the Moorish fish or dragon eyes, is a freshwater aquarium fish characterized mainly by its bulging eyes, its short round body with a double tail and anal fin.

We will teach you how to take care of the telescope perfectly. As well as the varieties that exist of this fish.

The best way to care for a telescope

Keep the aquarium in a dark place:

The eyes of this fish are very sensitive to light, and being exposed for a long time may end up causing fungus to emerge in the eyes. Therefore, the best thing you can do is to keep the aquarium in a dark place of the house. Where you do not get much sunlight or light from the lamps.

Fill the aquarium with warm water:

For the perfect care of the telescope fish, it is best for the aquarium to have the water at temperate temperatures, as these fish can withstand temperatures between 10 – 24 ºC. Therefore you will not need any thermostat to regulate the water temperature.

Charge the aquarium bit:

The Freshwater fish like the telescope fish is not good that they are in an aquarium very loaded with sharp objects, something that has many aquarium ornaments. Therefore, the best thing you can do is to have a very simple aquarium for this fish. Also do not place large objects, as these fish have little vision and may collide with them.

Check the power of the filters:

The telescope fish is not a very good swimmer, so you should not put a filter for water that generates strong currents or swallow it with your life. Change the water often: Since they need good oxygenation in the water, it is advisable to change the water once a week at least.

Distribute the meals well:

For the proper care of a Moorish fish do not abuse meals, as they have a low stomach capacity. For this reason, it is necessary to distribute the meals in small doses several times a day. It is an omnivorous fish, but preferably it is better to give it a food that contains a lot of vegetables.

Choose the right fish tank:

These fish require a fish tank with a capacity of 70 liters for proper growth, so it is not advisable to have this fish in a round fish tank.

Put an air pump:

They need the water to be well oxygenated, so not only have to change it often, but it is also advisable to put an air pump, even small, to receive the water properly.

Join two or more fish:

Not to reproduce each other, but the telescope fish thank the company of their fellow men. To take care of the telescope fish, it is best to have a mate or partner if you do not want them to lay eggs. If you are going to accompany him of another species, do not choose fry, since they can become your food.

Varieties of telescope fish

This fish so characteristic of China presents these varieties:

Black: It is the most classic variety that is known as Moorish black fish. His skin is totally dark.

Orange: Unlike the previous one, this fish has a vivid orange color on its skin, but in appearance, it is identical to black.

Goldfish: Combine the colors black and orange in a single fish, as if it were a mixture of both.

Fish compatible with the telescope

However, this fish is not compatible with all types of fish, since the temperatures that each fish can support are not the same nor the speed of swimming, the type of filter varies. You can combine this fish with:

Another telescope fish: Actually it would be the best option because among those of its same race are with those that better understand.

Golden Pearl Scale: It is a variety of Goldfish and will be the best companion of the telescope fish, as they are a variety of their species.

Tetra Cardenal: They may be together, but you have to be aware that sometimes the telescopes eat them.

Corydoras: Fully compatible.

Golden Lion Head: Another variety that will be fully compatible with your telescope fish.

But when it comes to putting another fish in the fish tank, keep in mind:

The telescope fish is a slow fish, so you can not put fast swimming fish in the aquarium. Such as gourami or barbs, which will steal fish food.

Do not mix cold water fish with hot water, the telescope can withstand low temperatures. But if you put fish in hot water, they will attack the fish to get warm.

The fish collide is not recommended to combine with the telescope or the Goldfish variety. As they tend to annoy them a lot and these end up dying of stress.


Taking care of a telescope fish can be quite an experience. It’s simple enough, especially for the little ones, and if the aquarium is prepared well. It will not require much more care than changing the water. And controlling the amount of food that is given to it from.



Author: Admin

James Walker has been a passionate aquarist for over 15 years. His fascination with underwater ecosystems began as a child, and he's since dedicated himself to learning about proper fish care, aquarium design, and the diverse world of freshwater species. James loves sharing his knowledge to help others build thriving aquatic environments.

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