Fish Diseases

Fish Diseases

In this category you will find articles that contain detailed information regarding the cause behind fish diseases and how to prevent, treat and cure them. The most common fish diseases are White Spot Disease (Ichthyophthirius multifilis), Marine White Spot Disease (Cryptocaryon), Skin or gill flukes, Anchor Worms, Hole in the Head disease (Hexamita), Velvet (Oodinium), Marine Velvet (Amylodinium), Fin Rot, Tuberculosis and Dropsy. White Spot Disease is caused by a parasite named Ichthyophthirius multifilis, and the disease is therefore also commonly known as Ich or Ick.

It is easy for the aquarist to involuntary introduce fish diseases to the aquarium when purchasing new fishes, invertebrates, plants and aquarium decorations. Bringing new living organisms into the aquarium is naturally more risky than inserting a new piece of equipment, since most malevolent organisms rapidly succumb without a suitable host. It is however possible for some organisms to stay dormant and survive without a host, and you should therefore always be careful when you move aquarium decoration and equipment from between aquariums.

White spot disease is caused by the Ichthyophthirius multifilis and the most distinguishing symptom is white spots that develop on the body and/or fins of your fish. Heavy breathing can be another symptom, and an infected fish will often scrub it self against rough surfaces in the aquarium.

Marine White Spot Disease is caused by a parasite named Cryptocaryon, but was earlier believed to be the result of an infection with a saltwater form of Ichthyophthirius. The symptoms are similar to freshwater Ich. It is possible for saltwater species become immune against Cryptocaryon and the immunity can stay for up to 6 months.

Skin and gill flukes are caused by parasitic flatworms known as Trematodes. Trematodes are called “flukes” since they have the same flattened body shape as a flounder, and the old Saxon name for flounder was fluke. A healthy fish will usually be able to withstand a small fluke attack, but a large fluke infestation can be lethal since skin flukes and gill flukes can cause severe tissue damage and lesions. Skin and gill flukes can also be the reason behind hyperplasia of both skin and gill epithelium. When the skin and gills are damaged by Trematodes, it will be even easier for new Trematodes to attack the fish.

Anchor Worms are thread-like worms that attach themselves to the head of the fish. You need to treat your fish with a remedy especially made in order to kill Anchor worms, since common treatments such as marine salt will have little or no effect on the Anchor worms. Never pull out the worms using force, since the head of the worm will stay attached to the head of the fish and grow a new body.

Hole in the Head disease is caused by Hexamita, a flagellated protozoan that is found in the gastrointestinal tracts of many fish species. Even healthy fish can carry Hexamita. If the water quality drops or if your fish is weakened by some other problem, Hexamita can spread from the intestines via feces in the water and attack the outside of the fish. A small sore will form above the eyes of the fish and eventually grow in to a large hole. Large fish species are more prone to hole in the head disease; especially large cichlids such as Oscars and Jurupari Earth Eaters.
Fish Diseases Article Categories
· Freshwater fish diseases
· Marine fish diseases
Fish Disease Articles

Argulus - Summary of the fish disease argulus
Anchor Worms - Information on diagnosing and treating anchor worms.
Buying Healthy fish - An article about how to avoid diseases by buying healthy fish
Common fish diseases. - An introduction to the more common fish diseases your fish might get.
Chilodonella - Information on diagnosing and treating Chilodonella.
Constipation - Information on diagnosing and treating constipation in fish.
Costia - Information on diagnosing and treating costia.
Danger Signs With Your Fishes - How to recognise the the existence of ill health in a fish.
Dropsy - Information on diagnosing and treating the dreaded dropsy.
Ergasilus - Information on diagnosing and treating ergasilus
Eye Problems - Information on diagnosing and treating eye problems in fish.
Fish Disease prevention - information about how to prevent disease in your tanks.
Fish Necropsy - How to examine dead fish for evidence of external parasites or internal problems.
Fish Tuberculosis - Causes and symptoms of fish TB. Mycobacterium marinum. Possible treatment. There is some danger to humans when servicing
Flukes - Information on flukes and how to trat flukes.
Fungus in fish - Information on diagnosing and treating fungis in fish.
Ich: An Old Cure for an Old Disease - Information on diagnosing and treating anchor worms.Natural methods to cure ich
Ich/ich on scaleless fish - Information on treating ich on scaleless fish such as botias.
Ich: An in-depth Explanation - A in-depth article on ich.
Glugea and Henneguya - Information on diagnosing and curing glugea and henneguya.
Hexamita - Information on diagnosing and treating hexamita.
Hole-in-the-Head Disease - Information on diagnosing and treating hole in the head disease.
Hole in the Head (HITH) and Head and Lateral Line Erosion (HLLE) - Information on HITH and HLLE.
Ichthyosporidium - Information on diagnosing and treating ichthyosporidium.
Injuries in fish - Information on how to care for injured fish
Leeches in aquariums - How to prevent and control leeches in your aquarium.
Lymphocystis - Information on diagnosing and treating lymphocystis.
Malawi bloat - Information on diagnosing and treating Malawi bloat
Marine Ich - Information on diagnosing and treating marine ich
Marine velvet - Information on diagnosing and treating the saltwater disease "marine velvet".
Nematodes - Information on diagnosing and treating nematodes.
Neon Tetra Disease - Information on diagnosing and treating neon tetra disease.
Pop Eye - Information on diagnosing and treating pop eye
Parasites and Similar Problem Organisms - Various fish parasites, some normally free-swimming organisms, and various species of algae can become a problem.
Preventing diseases - An article about how you can prevent diseases among your fish.
Quarantine Aquarium - An introduction to Quarantine Aquariums.
Red Pest Disease - Information on diagnosing and treating red pest.
Scale Protrusion - Information on diagnosing scale protrusion and how to treat it.
Swim-bladder disease - Information on the different causes of swim bladder problems and how the problem can be treated.
Tail & Fin Rot - Information on diagnosing and treating tail an fin rot.
Treat Argulus - Summary of treating fish disease argulus
Treating White Spot Disease - Symptoms of Ich, its life cycle, and treatments using either malachite green or aquarium salt.
Treating Fish - An introduction to the art of treating fish that suffers from a disease.
Tumors in fish - Information on tumors in fish
Uronema marinum - Information on diagnosing and treating Uronema marinum.
Velvet - Information on diagnosing and treating velvet

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