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Re: guppy sick?
Did a little bit of research and I found 3 things it possibly could be. These are all parasitic diseases that are caused by poor water quality.
1) Guppy Disease -
There is actually a disease caused by a protozoan that is more commonly seen in guppies than in any other fish. This is a tiny parasite that attacks the skin and may even reach as far as the muscles or bloodstream. They may get large enough to resemble ich and the scales may protrude, swimming is difficult and the skin usually falls off as well. If this is not taken care of quickly it can spread throughout the tank and be very difficult to control. Some treatments that should work are Malachite Green, Copper (try Aquarisol), and Formalin (use this with caution). Clout is a good name-brand remedy which should also take care of it. This disease should not occur in a clean, warm, guppy tank
2) Gill Flukes "Gill Worms" -
There are 3 types of these parasites and their effect is sometimes called "Gill Disease". The symptoms are reddened/inflamed/bleeding/slimy gills, growths, and heavy breathing near the water surface. There are actually 3 types and they eventually destroy the gills. One type, Diplozoa, is large enough to be seen (1.5 cm) and appears to be a gray/brown worm in the gills. The gills will bleed and the fish will have trouble breathing.
3) Body Flukes -
These seem to be common in guppy tanks. Gyrodactylus, a sucking worm, is a live bearer on its own. It attacks the skin and can only be seen under a microscope. Usually the first symptom a guppy shows is scratching on ornaments or the bottom in an effort to rid itself of the parasite. Imagine yourself with leeches all over! Fry normally display closed tails, or "pin tail" as they grossly affect the fins. The tail may completely fall off. Heavy infestations cause a grayish look to the skin, sometimes even inflammation and redness. Usually fry are dead before they succumb to this symptom. Action must be immediate with young guppies.
50 Bowfront, 2 Acei, 2 Yellow Labs, 1 Orange, 1 Albino, 2 Blue African Cichlids
30 Gal, 3 Fantail Goldfish, 1 Black Ryukin, 1 Common Pleco
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10 Gal, 2 Knight Gobies
10 Gal, 2 Bolivian Rams
1.5 Gal, Male Betta