. The complete aquarium book; the care and breeding of goldfish and tropical fishes. Aquariums; Goldfish. 86 FISH DISEASES An entirely different kind of fin congestion is sometimes prevalent in the fall, especially when the fishes are first taken in, the young being more liable to attack. The base of the tail and other fins becomes suddenly blood-red, the color sometimes extending to the body immedi- ately adjoining. If allowed to continue, this form of the disease is rapidly disastrous. Fortunately, it yields with surprising quickness to either salt water or permanganate of potash treatment.
. The complete aquarium book; the care and breeding of goldfish and tropical fishes. Aquariums; Goldfish. 86 FISH DISEASES An entirely different kind of fin congestion is sometimes prevalent in the fall, especially when the fishes are first taken in, the young being more liable to attack. The base of the tail and other fins becomes suddenly blood-red, the color sometimes extending to the body immedi- ately adjoining. If allowed to continue, this form of the disease is rapidly disastrous. Fortunately, it yields with surprising quickness to either salt water or permanganate of potash treatment. When alter- natives to salt-water treatment are suggested, the fancier will certainly be on the safe side by giving the salt the first trial, particularly if care- fully followed out as we have directed. White Fungus. This is next to the most common disease among goldfishes and is responsible for the majority of deaths, except among. Fig. 69. Fish Affected With White Fungus This illustration is characteristic of sick fishes in general. The fins are collapsed and the general appearance is one of listlessness. very young fry. It begins on the tail and other fins, extending over the body and into the gills. When it reaches this stage it is usually fatal. The progress of the disease is marked by the development of a white scum which destroys the fins, prevents the natural functions of the skin, and when the parasite enters the gills causes death by suffocation. The latter stage is not always reached, the fish often becoming so emaciated as to die in the second stage of the malady. The fungus causing this disease is present in virtually all water, but can usually make no inroads on a fish in good condition. A weakened fish once infected will breed so many bacteria that they can successfully attack the remaining well fish. White fungus, therefore, is contagious, and the sufferer should be removed from the others at once. This disease is caused by overcrowding, overfeeding, lack of pr
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