Infection Ability of Watermolds in Some Temperate Fishes of Himalaya, India

Infection ability tests of four species of the Saprolegniales viz., Brevilegnia subclavata Couch, Geolegnia inflata Coker & Braxton, Protoachlya oryzae Khulbe and Scoliolegnia centrica Khulbe were made by artificial inoculation experiments. Except Geolegnia inflata, all the three species parasitized the test fishes (Carassius auratus L., Puntius conchonius Ham., P. ticto Ham. and Nemacheilus rupicola). Two chemicals, namely boric acid and potassium permanganate were effective at 0.1 to 0.15 M concentrations against parasitic watermolds.