Friday, October 5, 2012

Common Fresh Water Fish Diseases


Hey everyone!

Sorry I didn't post last week; I took some personal time off. I'm back this week with new information on common diseases fresh water fish may encounter in their tank environment.


One of the challenges of keeping an aquarium tank is that many diseases will make themselves at home in the aquatic environment.  There are hundreds of afflictions that can affect the health of your fish. The most common seen in are usually either bacterial or parasitic. Fungal infections sometimes occur, and occasionally physical afflictions.

It’s easy to involuntarily introduce fish diseases to the aquarium tank when buying new fish, plants and decorations. Bringing new living organisms into the aquarium is more risky than inserting a new piece of equipment. Luckily, most ailments are easily diagnosed and treated with success. Understanding how the home aquaria and its filtration systems work will help support aquatic life vital in preventing fish diseases. The basics of life support are the same whether you have a freshwater aquarium, saltwater aquarium, or a mini reef.


The most common fish diseases are White Spot Disease, Marine White Spot Disease, skin and/or gill flukes, Anchor Worms, Hole in the Head disease, Velvet, Marine Velvet, Fin Rot, TB (tuberculosis) and Dropsy. I’ll cover a few of the fresh water diseases in today’s blog. For more details on common fresh water diseases: symptoms, causes, and descriptions visit:


White Spot Disease
White spot disease, also known as ich or ick, is the distinguished by the white spots that develop on the body and/or fins of the fish. Heavy breathing can be another symptom. An infected fish will often scrub itself against a rough surface in the tank.
Gill Fluke
Skin and gill flukes are caused by parasitic flatworms. A healthy fish will usually withstand a small fluke attack, but a large infestation can be lethal since they can cause severe tissue damage and lesions.

Anchor Worms Near Fin
Anchor worms are thread-like worms that attach themselves to the head of the fish. They need to be treated with a remedy made special to kill anchor worms. Like ticks, never pull the worms using force since the head still stay attached to the fish and grow a new body.

Hole in the Head Disease 
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 these protozoa. If the water quality drops, or the fish is weakened by another problem, it 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 into a large hole. Large fish species are more prone to hole in the head disease.

Knowing that these conditions exist is reason enough to make sure we take care of our fish friends to the best of our abilities. That's it for this time!

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1 comment:

  1. Wow ... poor pink fish. I didn't know about the hole in the head disease. Thanks for sharing this info! Great work!

    ReplyDelete