Comet Goldfish

Comet Goldfish

The Comet Goldfish is an elongated, flat-bodied variety of goldfish. It has a wide but short head, and its body tapers smoothly from its back and belly to the base of its caudal fin (tail fin). Its caudal fin is long and deeply forked and generally stands fully erect. They live up to 14 years or more, depending on how well it is kept and the prevailing conditions. In terms of size, it is slightly smaller than the common goldfish, but this depends also on the prevailing conditions. They can grow up to 12 inches (30+ cm) depending on the size of the tank and the other conditions.

They are primarily a reddish orange color, but they are also available in yellow, orange, white, and red. Some however have a bi-color red/white combination, and occasionally they are available with nacreous (pearly) scales, giving them a variegated color.
Comet Goldfish are some of the hardier species of goldfish. They are very undemanding of water quality and temperature. They can do well in a goldfish aquarium or even a pond as long as the environment is safe and their tankmates are not competitive. Many people will keep goldfish in an aquarium with no heater or filtration, but for the best success, provide them the same filtration, especially biological filtration, that other aquarium residents enjoy.

Comet Goldfish Diet

Since they are omnivorous, the Comet Goldfish will generally eat all kinds of fresh, frozen, and flake foods. To keep a good balance, give them a high quality flake food every day. To care for your goldfish, feed brine shrimp (either live or frozen), blood worms, Daphnia, or tubifex worms as a treat. It is usually better to feed freeze-dried foods as opposed to live foods to avoid parasites and bacterial infections that could be present in live foods.

Fish tank

These goldfish are hardy and easy to keep in a well maintained tank. Minimum tank size is 15 gallons. Snails can be added as they reduce the algae in the tank, helping to keep it clean. Water change should be done weekly. This is because Comet goldfish produce more waste than most other freshwater fish and benefit greatly from more frequent water changes. Good filtration, especially biological filtration, is very helpful in maintaining the water quality of the aquarium. A filtration system will remove much of the detritus, excess foods, and waste, which keeps the tank clean and maintains the general health of the goldfish.

Comet Goldfish Diseases

1. Ich. This is a protozoan disease which is easy to identify because it makes the fish look like it is sprinkled with salt. Though Ich is easily treated, like other protozoan diseases, it can be fatal if not caught quickly. Some other protozoan diseases are Costia, which causes a cloudiness of the skin, and Chilodonella, which will cause a blue-white cloudiness on the skin.

2. External parasites. These are common but are easy to treat and are normally not fatal when treated. They include flukes, which infest the gills or body of the fish, fish lice (Argulus) that attach themselves to the body of the goldfish and finally anchor worms which resemble threads coming out of the fish.

3. Bacterial infections. They include Dropsy, an infection in the kidneys that can be fatal if not treated quickly. Fish Tuberculosis is indicated by the fish becoming emaciated (having a hollow belly). For this illness, there is no absolute treatment, and it can be fatal. Tail/Fin Rot may also be bacterial, though the reduced tail or fins can be caused by a number of factors as well. There is also fungus, a fungal infection, and Black Spot or Black Ich, which is a parasitic infection.

4. Swim Bladder Disease. This is an ailment indicated by fish swimming in abnormal patterns and having difficulty maintaining their balance. This can be caused by a number of things: constipation, poor nutrition, a physical deformity, or a parasitic infection. Feeding frozen peas (defrosted) has been noted to help alleviate the symptoms and correct the problem in some cases.

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Seahorse Tanks

Seahorse Tanks


There are approximately 36 species of seahorses all belonging to the Sygnathid family (Genus Hippocampus). Pipe fishes and seadragons are also included in the Sygnathid family.


1. Unlike most fishes seahorses swim upright using only their dorsal and opercular (modified pectoral) fins for propulsion.

2. They do not have a caudal fin, in its place they have a long muscular prehensile tail.

3. They also lack any scales; instead their bone structure is modified into a series of plates that act as bony armor.

4. They have a horse-like head (giving it the name seahorse) with a bent neck and a long snout. This adaptation allows the seahorse to probe into nooks and crannies for prey, that they then suck up with a “snick” of the snout that causes a vacuum like suction.

Seahorse Fish tank

Although seahorses live in a diverse array of habitats, in a domestic setup they need the same basic care and water quality as other fishes. The main difference however with seahorses is their sensitivity to changes in water quality, temperature and light.

Factors to consider when setting up seahorse tanks include:

1. The filter. There should be no air bubbles and a low flow rate (this does not necessarily mean low gph). Seahorses like a fairly turbulence free tank, and air bubbles can lead to the dreaded Gas Bubble Disease (to be discussed later in the article).

2. The next most important thing is to get a tank that is tall, seahorses are known for their intricate courtship rituals that take up a lot of vertical space. Substrate can vary by what decor you are looking for. Just remember that whatever substrate you chose, it should not have too many sharp edges for the seahorse to get cuts from. I prefer to use a small crushed coral or sand substrate.

3. The hitching posts; rocks, plants, and corals (faux and real) should be chosen by their ability to be used as a hitching spot. Depending on species of seahorse, the size and maximum diameter of the hitching posts will vary.

Seahorse Tanks – Feeding and Diet

Seahorses should be fed on frozen, enriched foods. Live foods should therefore, only be used as an enrichment item. Frozen food should always be enriched with a vitamin supplement as well as something such as selcon that is high in fatty acids.

Seahorse Tanks – Diseases

1. Mycobacterium. This is very common and is fatal. Symptoms inclide: lethargy, loss of appetite, an abdomen that is very pinched or swollen, and eventually muted color/loss of vibrance. Treatment include Kanamyacin and Maracyn which should be administered orally.

2. Vibrio. This is difficult to detect early and is fatal. Symptoms include; lethargy, loss of appetite, and white or red spots on the skin indicating an open necrotic wound. Often when tail rot or snout rot is seen it is vibrio. Treatment is a multiple antibiotic especially when detected early.

3. Gas Bubble Disease (GBD). There are three main types of GBD, internal GBD (IGBD), external GBD (EGBD) and pouch emphysema. All GBD is caused either by gas supersaturation in the water column, or an internal bacterial infection. EGBD symptoms include gas bubbles forming under the skin. While IGBD symptoms include body bloat causing buoyancy problems. Pouch emphysema is only found in male seahorses, and is noticeable by the inflamed, reddened pouch (looks different from a pregnant seahorse). Treatment typically consists of 3 things: making sure there are no air bubbles getting into the system, treating with an antibiotic, and if available (only by prescription) treating with diamox. The actual bubbles under the skin may be popped, and with pouch emphysema the pouch should be evacuated.

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