Effect of Surfactant on External Morphology and Physiological Respiration of Freshwater Fish, Labeo Rohita’’

Surfactants are the major components of detergent used in household as cleaning products. In present study effects of surfactants (Surf excel) on external morphology and physiological respiration (breathing rate) of freshwater fish Labeo rohita have been reported. For this fishes were divided into two groups. Group-I fishes were placed under the concentration of 6.63 mg/lit surfactant and Group-II fishes were placed under the concentration of 13.03 mg/ lit surfactant. One group fishes were placed in freshwater act as control group. In our experiment, fish body was worst affected by the presence of surfactant in water as swelling on the lips and on gill lamellae were recorded in fish exposed to 6.63 mg/l concentration of surfactant Further, damage of caudal fin, scars on anal fin and swelling in the eye region were also observed in fish placed under 13.3 mg/l concentration of surfactant (surf excel). Physiological respiration was also influenced by the presence of surfactant as it was recorded to be different in comparison to control group. Hence, this parameter was found to be decreased with increased duration and concentration of surfactant.