My fish have black bugs on them, who knows?

This disease is a parasitic disease. It's called anchor head disease. If it has already appeared outside the fish, it can be removed directly by hand, preferably with tweezers.

After piercing deeply into the body tissues of the fish, the anchorhead worm keeps itself firmly attached to the fish. Adult bugs can be removed one by one, but this is a long process and potentially harmful to the fish. Short-term soaking in a 3% salt solution can also remove the worms from fish to fish.

There are now aquarium treatments that kill the adult worms.

Depending on the description, your fish may have a parasite called the anchorhead worm growing on it.

Anchorhead worms are parasites that live on the body of fish, and they penetrate deeply into the body tissues of the fish, making themselves firmly attached to the fish. The adult stage of anchorhead worms is dioecious, and the bugs that parasitize fish are mostly females, so the bugs that see black may be females.

If you have an anchorhead bug on your fish, you can deal with it by:

1.Use tweezers to remove the adults one by one and soak the fish body in 3% saline solution for a short time to kill the insects.

2.Use an aquarium treatment to kill adults and larvae.

3.If the condition is severe, medication may be considered.

It is important to note that the anchorhead worm is a relatively stubborn parasite and requires patience and care to deal with, while also taking care to protect your fish from harm. If you are unsure about what to do, it is advisable to consult a professional.

Midge moth larvae. The bottom of the fish tank is black and wriggling, called moth midges.

Eggs, which are present all year round, are parasites carried in tap water.

The upper layers are more severe, and generally survive and reproduce in damp places.

In the above situation, wash the cotton in time, blanch the cotton or replace it with new cotton, change the water every day for a week, blanch or change the cotton for a week, and feed a small amount of food with low protein content during this period or simply stop eating, and check the dead angle and stagnant water of the biochemical filter material by the way.

area, which can effectively control small black worms.

Summary. Golden drum fish, bony fish, perciformes, money fishes. It is about 20 cm long, flattened and tall on the sides of the body, and slightly hexagonal.

The head is small and the snout is wide and short. Mouth small, anterior, transversely lobed. The upper and lower jaw teeth are finely pointed, bristle-like, and have three cusps.

The body is covered with fine scales. In front of the dorsal fin there is a forward-lying thorn brownish-brown with scattered dark spots. The dorsal, antetocks, and caudal fins all have dark spots, and the head often has a black transverse band.

It inhabits offshore reefs and often enters freshwater estuaries. Feeds on crustaceans attached to rocky mollusks. Swim slowly and in groups.

In early spring, they spawn near the shore and swim to the open sea after spawning. The body is flattened and disc-shaped. The body length is about 20 to 30 centimeters.

The body is orange-red. The surface of the body is covered with dozens of black round spots, which look like money. The back is high and bulging, and the mouth is small.

The scales are small. The body of the fish is yellowish-brown, scattered with many black round spots, and the belly is silvery-white. There is also a kind of body shape but the color of the body is silver, which is generally called the silver drum fish <>

What kind of fish is a fish with black spots on its body?

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The fish with black spots on the body is the golden drum fish, oh dear.

There are also <> that can be referred to by kissing

Golden drum fish, bony fish, perciformes, money fishes. It is about 20 cm long, flattened and tall on the sides of the body, and slightly hexagonal.

The head is small and the snout is wide and short. Mouth small, anterior, transversely lobed. The upper and lower jaw teeth are finely pointed, bristle-like, and have three cusps.

The body is covered with fine scales. In front of the dorsal fin there is a forward-lying thorn brownish-brown with scattered dark spots. The dorsal, antetocks, and caudal fins all have dark spots, and the head often has a black transverse band.

It inhabits offshore reefs and often enters freshwater estuaries. Feeds on crustaceans attached to rocky mollusks. Swim slowly and in groups.

In early spring, they spawn near the shore and swim to the open sea after spawning. The body is flattened and disc-shaped. The body length is about 20 to 30 centimeters.

The body is orange-red. The surface of the body is covered with dozens of black round spots, which look like money. The back is high and bulging, and the mouth is small.

The scales are small. The body of the fish is yellowish-brown, scattered with many black round spots, and the belly is silvery-white. There is also a kind of body shape but the color of the body is silver, which is generally called the silver drum fish <>

This is a fish with black spot disease, the pathogen is mainly water mold and mold, parasitic on the wounds and eggs of the fish body, is a more common fish disease. **Mainly the fish body is injured, the scales fall off, etc., resulting in the invasion of germs into the wound.

**Method: a. Splash 250 grams of salt and 250 grams of baking soda mixture on a 100cmx55cmx45cm fish tank, insist on several times, and the effect is remarkable.

b. Dissolve malachite green grams or methylene blue in 100 kg of water, soak the fish body for 10 20 minutes, and the mycelium can be seen to fall off after a few days.

c. Soak in 2%-3% salt water, once a day, for 5-10 minutes each time.

d. Mix 2 parts per million (2ppm) potassium permanganate plus 1% brine and soak the diseased fish for 20-30 minutes.

e. Increase the water temperature to inhibit the growth of water mold. And a 15-watt ultraviolet lamp can be used to irradiate for several hours a day, which can effectively inhibit and eliminate water mold.

It should be the larvae of a mosquito.

Pay attention to the sealing of the fish tank, especially the bottom filter (filtration). The insects are fished out, filtered and washed, and scalded. Because the filter cotton is the easiest to store insects and eggs, and the main ** of insects and eggs is caused by poor filtration of the fish tank or the seal of the fish tank!

If it's swimming in the tank, not parasitizing on the fish, it's fine, just get rid of it!

Midge moth larvae. Copy.

The bottom of the fish tank is filtered with black wriggling eggs called moth midge eggs, this insect is present all year round, it is a parasite carried in tap water, the upper layer is more serious, and it generally survives and reproduces in humid places.

In the above situation, timely washing, scalding or replacing new cotton, changing the water every day for a week, scalding or changing cotton for a week, during this period, a small amount of food with low protein content or simply stop eating, by the way, check the dead corner and dead water area of the biochemical filter material, which can effectively prevent and control small black worms.

Your diagram is so clear!

In fact, this worm is very small, and its length is only a few millimeters, right? This is the larvae of that little flying insect.

Wash the filter cotton frequently, and then pay attention to the sealing. There doesn't seem to be a good way to do it.

There are black spots on the body.

I think yes, I have black spot disease. The head becomes smaller, which is caused by black spot disease.

Black spot disease, also known as melon worm disease, is a disease that often occurs in fish farming. It can happen in any season!

Spring and autumn are the most susceptible to disease, with strong seasonal attention, if it is a cold-water fish such as goldfish, it can not be warmed up, only medicated. Due to the large temperature difference between day and night, tropical fish in tanks without thermostats are most susceptible to black spot disease. After tropical fish get this disease, small black spots grow on the gill cover and each fin, and then grow all over the body, and the mucus on the body surface increases in the later stage, and the black spots become black cyst vesicles, which seem to be covered with a layer of black membrane.

Diseased fish tend to be significantly less active, floating on the surface of the water or congregating in a corner, and if not timed**, they will gradually lose weight until they die.

It is very simple to deal with black spot disease, in addition to the drugs that are sold in aquarium stores for black spot disease, you can also use economical, simple and effective methods.

According to my experience, malachite green can be used to make the water in the fish tank slightly blue, and it can also kill small melon insects for 2 consecutive days, and after 1-2 days, the micro blue in the water will disappear by itself.

You can also use 1-2% salt water to soak the fish body for 10-20 minutes, and it will be better for a few days.

Summary. This is the fish lice, also known as the carp lice. Gill tail subclass crustaceans, parasitic on migratory marine fish and freshwater fish, about 120 species are known, most of which belong to the genus Ichthys.

Generally, some metronidazole, trichlorfon, methane, etc. are put in the water regularly, according to different fish drugs, and then there is to increase the water temperature, and stop eating during the medication period. Keep the water clean and regularly clean the fish tank with potassium permanganate, which can be effectively prevented, if it is a large fish or a serious disease, you can highly dilute potassium permanganate, soak the fish in it for a second or two, and then put it back into the sterilized tank, increase the water temperature, maintain oxygen and water quality.

I'm sorry I don't understand, but can you elaborate on that?

This is the fish lice, also known as the carp lice. Gill tail subclass crustaceans, parasitic on migratory marine fish and freshwater fish, about 120 species are known, most of which belong to the genus Ichthys. Generally, some metronidazole, trichlorfon, methane, etc. are put in the water regularly, according to different fish drugs, and then there is to increase the water temperature, and stop eating during the medication period.

If it is a large fish or a serious condition, you can highly dilute the potassium permanganate and soak the fish for a second or two and then put it back into the sterilized tank to increase the water temperature and maintain oxygen and water quality.