Isolation of Tetrahymena pyriformis From Several Infected Pet Fish Species And a Regime For Its Treatment

Abstract

Tetrahymena pyriformis has been firstly isolated from brood Goldfish (Carassius auratus) Common, Fantail, Ryukin, Veiltail and Moor, Black molly (Poecilia sphenops), Gourami (Trichogaster trichopterus), red Swordtail (Xiphophorus helleri), Guppy (Poecilia reticulata), deep Angelfish (Pterophyllum scalare) and brood Algae eater (Hypostomus plecostomus) in Iraq. The infected fish suffered from mucus hypersecretion large hyperemic areas on the skin, and slight shedding of the scales. The incidence percentage of infection was 100 %. Rising water temperature was up to 29 – 30cْ for one time and methylene blue was at a concentration of 5 ppm for 24 hours. Sodium chloride at a concentration of 2 % for one minute and two minutes has no obvious effect on Tetrahymena pyriformis. Treatment with NaCl at the concentration of 1% for 20 minutes for three consecutive days achieved the best results.