Experimental Study for an Eco-friendly Controlling of Ichthyophthirius multifiliis in Striped Catfish, Pangasianodon hypophthalmus (Sauvage 1878)

Ichthyophthirius multifiliis is a single-celled parasitic ciliate that causes problems for almost all species
of freshwater fish. It affects both wild and farmed fish. It infects the fish host and causes “White spot
disease”, which becomes fatal within a matter of days. Three hundred twenty four (324) infected tiger
shark/striped catfish, Pangasianodon hypophthalmus fingerlings (mean weight 5.23 ± 0.95 g, length
8.63 ± 0.92) were transferred and equally distributed to the 0.45 m3 glass aquaria (36 fishes/180 l
water) in triplicate manner and treated with three treatments combination viz. T1) Methylene blue and
salt T2) Raising temperature with salt T3) Formalin and Malachite green. Similar stocking densities
were also maintained for control in triplicate (C1).The best fingerling survival (55±9.36%) was
obtained in eco-friendly treatment by elevated water temperature with salt in T2.