author(s)
Jawdhira Abdulhusein Hamzah Abdelhusein1, Pramod W.Ramteke2

abstract
The study was conducted these are for the purpose of identifying the types of external parasites that infect fish in the city of Hilla (vanguard city lakes) with determining damages resulting and determine the most appropriate ways to get rid of them. The reason for this study to increase the number of dead fish in this city the study examined 500 fish live in the stage (fingerlings, Mothers) carp that have been collected from various lakes in the city ahead of the curve. Most important symptoms of infected fish: general weakness, slow motion, the fall of cobalt, change the color of the body, an increase in mucus secretions on the body surface. Been identified parasites that infect fish tissue to eliminate these parasites have been successfully used Formalin bath concentration 15-25 ppm for 24 hours on farms in small ponds and tanks may be used formalin concentration from 100 to 150 ppm for 3 hours - can be used Brine saline (NaCl) concentration of 1% bath for 10).