Providing a clean, hygienic environment for your fish is the best way to help keep them healthy. Many diseases can be prevented by maintaining good water conditions. Fish can get stressed when left in poor water which in turn can lower their immune system making them susceptible to disease.
The following are the most common problems that can affect your fish whether coldwater or tropical, but if you have any doubts about the health of your fish seek professional advice.
Fungus: This can be caused by skin damage which has become infected with white or grey cotton-wool like growths. Treat with an anti-fungal treatment.
White spot: Fish can develop small round white spots all over (usually starting at the fins). This is a fast-spreading parasite. Affected fish may also have rapid gill movement. Treat using an anti-white spot treatment taking care to ensure treatment is correct for the type of fish.
Fin/Tail/Mouth Rot: The fish will be lethargic and not move around the tank much. Ragged fins and/or tail will appear to be rotting away. It can also affect the mouth with cotton wool-like growths. Use a treatment that tackles both bacterial and fungal infections.
Dropsy (protruding scales): Fish scales protruding like a pine cone, are caused by an internal bacterial infection. Treat with an anti-bacterial treatment.
Velvet disease: Clumps of fine gold spots are a skin parasite which can be irritating and itchy to the fish. Treat with an anti- parasite remedy.
Slime disease: A fish’s response to skin parasites. Cloudy grey mucus covers the body. Treat with an anti-parasite treatment.