Mohamed, A.A. 2003 An intervention study was conducted on the introduction of the larvivorous fish Oreochromis spilurus spilurus as a method of malaria vector control in Kalabeydh village, northern Somalia. This species is resistant to chlorine in water up to a concentration of 1.0 mg L. Fish were introduced into 25 berkit reservoirs . After 1 month the number of larvae in each berkit was reduced by between 16.5 and 78.6 mean 52.8 . Community acceptance and participation was good. The introduction of larvivorous fish is a cheap method of malaria vector control, ...