Everything you need to know about the telescope fish
Although the telescope fish has bulging and symmetrical eyes, it lacks low visibility. However, it has become one of the most chosen species by users because its behavior is very calm, although if you want it to last for five or ten years you need special attention and care.

Telescope fish overview
The eyes of the Moorish or black fish are delicate and sensitive to light due to their enhancement, in some cases it can catch visual diseases that can cause permanent blindness. In addition you have to be very careful with the food you give them, this species has a fairly small stomach so it is not able to digest them quickly.
Telescope fish require a balanced and varied diet to strengthen their entire body, as well as the elimination of any health problems or diseases in the digestive system that could develop serious alterations in the future. The most convenient thing is to give them special products in small portions but in greater numbers so that their digestion goes smoothly.
The telescope is a fish that is at a disadvantage when feeding in the company of other species, so it is important to throw the food at a short distance so that other fish can not take it away. In order for females to reproduce eggs, it is necessary to look for a larger aquarium to prevent other fish from hurting them.
Scientific Name: | Carassius auratus auratus |
Family: | Carp, Minnow |
Type: | Twin Tail |
Environment: | Freshwater |
Temperament: | Peaceful, Friendly |
Swimming Speed: | Slow |
Tankmates: | Other slow swimmers (Celestial, Bubble Eye) |
Lifespan: | 10-15 years |
Size: | 5-8” |
Types of telescope fish
It should be mentioned that this genus has several varieties of existence around the world, most of them maintain a great resemblance. Among the best known we can mention:
- Bubble eyes
- Heavenly fish
- Lion’s head
- Demekin
- Dragon Eye
- Kite Fish
The one that stands out most for its great resemblance to the telescope is the Demekin, the only thing that changes is the color of the fins and its tail is larger. Despite having a lot of similarity, the Demekin fish does not have a double fin, much less have parallel fins attached to its round and short body, and the lower part of its fins are shaped like a butterfly.
Telescope fish breeding
The telescope fish belongs to the family of caracids and needs special care for its correct development. Its main characteristic is due to the variety of eyes they have which are modified in the form of a telescope or Demekin, it also has a short and round body with lines above that makes it striking.
Reproduction of the telescope fish
Double fin count without taking into account the pectorals and dorsal. In order for it to swim easily the caudal fin must be divided, the advantage of this species is that it can be obtained in a wide variety of colors thanks to the enough developed captive breeding.
Telescope fish lack low vitality as they are not very good at swimming, they also have low visual restrictions that usually affect over time. Through scientific studies it has been proven that from the three years of aging begin to arise degenerative discomfort in the sight and in most cases causes blindness.
Despite these drawbacks the telescope fish is still one of the favorites, so many people opt for it. To produce more of these fish you need to put a female and a male together, then the visible eggs will be attached to the plants until the laying is over. They will be fed with daphnias, saline artemia and dry food for their correct development.
Tips for breeding this fish
To keep the offspring of this genus in good condition, it is essential to give them a series of attentions and care. Takes note of the following recommendations:
Move the aquarium away from the light: due to the shape of its eyes this fish can not be long in the light so it is recommended to place the fish tank in a dark place, otherwise it can cause fungi in the eyes to cause permanent blindness.
Warm water: for the offspring of this species to be saved while they grow, care must be taken with the water, due to their low vulnerability they are not able to resist sudden changes so the ideal is to fill the aquarium with warm water.
Behavior of telescope fish
The black fish, moor, or also called telescope fish, is characterized by being a very peculiar species within the world of aquaristism. Despite requiring special care due to its low vulnerability, it is depicted as a calm genus with developed captivity. There are quality specimens with intense coloration that expand towards the fins to be more striking. Most of the time, he remains motionless and expresses gratitude to the person who is watching him from outside the aquarium. You can put some companions of the same species or others similar, but they are not those who swim fast, because the telescope fish swims slowly and the others can take away their food by attacking it at the same time.
How a telescope fish behaves
Telescope fish belong to the omnivore family so they usually devour all the food provided to them. When it shares its natural habitat with other fish it does not usually disturb or attack them so it is recommended not to incorporate other species of hot water since they can attack to warm up.
This species needs special care to survive and develop correctly, therefore they require a good quality of warm and clean water to avoid contagion by pests or accumulated bacteria. In addition, the water must be in constant motion to help you swim alongside a mediated current that contributes to better visibility.
Recommendations to take care of them
For this type of genus to reproduce freely it is necessary to opt for a larger aquarium with 60 to 80 liters of water. It is also important to place a sponge filter that generates short currents. When the laying of eggs occurs within the habitat, the most convenient thing is to take them out and place them in another fish tank so that they do not eat them.
This species is usually very peaceful but if you make sudden movements outside the aquarium they can become stressed due to their low focus. To keep them in good condition as long as possible constantly check your eyes as they are prone to infections.
Aquariums for fish telescope
The telescope fish is also known as a moorish or black fish, this is due to its dragon-shaped eye. In order for it to survive to five or ten years old it must be kept in a freshwater and temperate aquarium away from light. Because of its low vision it is recommended to look for a large aquarium so that you can swim perfectly without tripping over anything or hurting your skin. This genus may not be the best to enter the world of aquarism because it is more susceptible to other species, but if you give it the necessary attention you have nothing else to worry about.
Fish tanks for telescope fish
Telescope fish have double wing, however this does not mean that they can swim perfectly since as we explained before, due to their low visibility it is difficult for them to swim. To facilitate their development it is recommended to opt for a wide fish tank and that they are not overloaded with pointed objects. The ideal is to place natural plants so that you can swim freely without tripping or hurting any part of your skin.
The aquarium should be cleaned frequently to avoid the accumulation of bacteria, in addition the water temperature should be warm since the telescope fish does not resist living between 10° and 24°. If left at temperatures higher than these the fish can die in a few hours. An air pump or bubble can also be used for excellent oxygenation.
Accessories for the aquarium
The years of life of these fish depend on the care you give them, remember that they lack vulnerability so precision care is required. Be very careful not to place a filter that generates intense water currents since it can suck the fish until it dies, passing its care only requires the following:
- An aquarium containing 40 liters of water
- An oxygen pump
- A low-power water filter
- Natural leaves
- Foods rich in vegetables due to their small small stomach
The care of the telescope fish
There are a variety of fish that you can buy and raise them in your own home following the proper regulations, but the telescope fish is a special genus due to its physical appearance. There are several variants within its species but the most seen is black, for this reason it has been called Moorish or black fish. It is characterized by having a round body, double fins and bulging eyes.
How to care for a telescope fish
This species can live up to 5 or 10 years, but to preserve its existence it is important to follow a series of attentions and care. The first thing you should do is place the aquarium in a place where light does not reach so much, this type of fish is very sensitive to irradiation so that a long time exposed can develop fungi in the eyes and over time can lose vision completely.
The greatest care must be taken with the water that is placed on it since the telescope fish do not resist significant changes in temperature. The idea is to fill the aquarium with warm water in this way you will not need to use any thermostat for the regularization of the temperature every time you change it.
For a more natural habitat it is convenient not to load it with sharp or large objects, the telescope fish has little vision and can collide with them. Nor should you put a filter too extensive that forms strong water currents since this species is not very good swimmer, otherwise it can swallow it ending its life.
Basic care you need
The best thing you can do to keep your fish healthy and develop properly is to place natural plants inside the aquarium that may be able to control the nitrogen within it. The advantage of using plants is that they are flexible, allow the fish to swim without any problems and do not cause damage when hitting them. As for food, the right thing to do is to give them special products in small quantities due to their low digestive capacity.
Feeding the telescope fish
The telescope fish, also known as dragon eyes or Moorish fish, lives in fresh water and requires special care. One of these fundamental cares focuses on food. It is important to know what they eat and how to give them to them? to avoid damaging them.
How to feed the telescope fish
Caring for a telescope fish starts from knowing how to give it the special food for its genus. The first thing to know is that you should not abuse the ration between times. Usually these fish eat all kinds of food that is entered into the aquarium, however their stomach capacity is low so they can get sick from infection quickly.
It is recommended to give several shots a day, usually 4 will be more than enough. It should be remembered that telescope fish are omnivores, but it is better to give them food that contains a high concentration of vegetables, or failing that, that is totally vegetable. It should be noted that the more years they have, the less amount they consume.
The rich and varied diet is the key to their growth and reproduction. When fed with harmful products they suffer health problems that focus on the swim bladder which is the most vulnerable part in this type of fish.
When this species is alone its appetite is minimal, the reason is evidenced in the little incentivized activity it has and the lack of chemical secretions that is caused when it finds a partner to reproduce. Therefore, feeding is also related to the number of fish around it.
What do telescope fish eat?
A detail that should be clarified is that on several occasions the food is not that it is not to your liking, it usually happens that the change of aquarium can confuse you so you should be given time to acclimate to your new home.
Being an omnivorous fish it can eat almost everything, from vegetables to animals. When he is with other animals he can ingest fewer amounts, so it is recommended to throw the food at short distances and in distraction from the other fish. You will perfectly eat foods such as:
- Fresh lettuce
- Peas
- Chard
- Watercress