Fish in an aquarium depend more than any other animal on proper care. A high water quality must be maintained, feeding must be appropriate for the species and the equipment must meet the needs of life.
The water temperature determines the availability of oxygen. Some species of fish tolerate large fluctuations in the above parameters, others become ill with the slightest change. Read here how to detect fish diseases and what you can do about them.
How to recognize fish diseases?
If you observe your fish consciously every day, it is easy to recognize the first signs of disease. It is more difficult to identify the disease. Do not hesitate to consult a veterinarian. Symptoms of a disease can affect the behaviour or the body surface of the fish.
Sick fish swim little, remain apathetically in a corner of the aquarium or remain densely under the water surface “hang”. Also a rubbing at stones or roots can indicate an illness. Moreover, the coloration of the fish can diminish, the eyes can protrude and the fish can appear altogether bloated. Obvious signs of disease are ulcers, slimy coatings or holes in the fins.
Causes for fish diseases
Causes for fish diseases are manifold. The most common causes are listed below:
- Infestation with pathogens (bacteria, viruses, fungi, parasites)
- Stress by a too high stocking of the aquarium or a bad Water quality
- Injuries from rival fights
- a weakened immune system
- wrong feeding (too few vitamins or not appropriate to the species)
- Adding new fish that have not been quarantined
- a wrong water temperature and lack of oxygen
Are fish diseases curable?
Many fish diseases are treatable. It is important that a disease is detected early so that appropriate measures can be taken. Some diseases, such as white spot disease or fin rot, can be fatal if they are not treated.
A too high chorine content can poison the fish and lead to a quick extinction of the whole stock. With some fish diseases the aquarium must be treated as well to eliminate the pathogens and to cure the disease completely.
How do you treat sick fish?
The treatment of the fish depends on the disease. First of all, it is important to provide the correct diagnosis so that a specific therapy can be given. Bacterial diseases often require an antibiotic. Skin parasites or fungi can be treated with malachite green oxalate or with short medication baths in separate containers. For many diseases, remedies are available.
Supporting therapies include cleaning the aquarium, partial water changes, increasing the water temperature, isolating diseased fish and supporting the fish’s immune system with vitamins.
Prevent fish diseases
Prophylaxis is the best medicine. This also applies to our friends in the aquarium. Pay attention to vitamin-rich feeding, which is adapted to the needs of the fish. This supports the immune system and diseases can be fended off more easily. This also includes avoiding stress.
A stocking density appropriate to the size of the tank should be aimed for. Rank fights can lead to injuries that provide a target for pathogens. An optimal water quality and the right water temperature are essential for the health of the fish. To prevent diseases from being introduced from outside, new fish should first be observed in a quarantine tank before being added to the stock.
The most common fish diseases
Among the most common fish diseases that can occur in fish in the aquarium are:
- Abdominal dropsy / Ascites
- Alder cones against fish diseases
- Bacterial infection
- Camallanus / Camallanus cotti
- Fin rot
- Fish tuberculosis
- Intestinal flagellates
- Neon / Tetra disease
- Popeye Fishdisease
- Sea almond / countrx almond leaves against fish diseases
- Shrimp diseases
- White spot disease / Ichthyo / Ichthyophthirius multifiliis
Please note that Freshwater-aquarium.com treats all information without guarantee and does not guarantee the correctness. Furthermore, online information does not replace a visit to a specialist or veterinarian. For all questions regarding fish diseases, their treatment or the use of medication we recommend to consult a veterinarian.