COMPOSITONS DE PESTICIDE TOPIQUE RENFERMANT DE L'AZAMETHIPHOS ET DE LA CYPERMETHRINE OU DE LA DELTAMETHRINE EN VUE DE COMBATTRE LES ECTOPARASITES SUR LES POISSONS
The present invention provides a method of pesticidal treatment of vertebrateaquatic animals, in particular fish,which method comprises applying to said aquatic animals, typically topicallyor, more preferably, by administration into water inwhich said aquatic animals are contained, a topical pesticidal compositioncomprising a pyrethroid and an organophosphatebiocide in a weight ratio of 1 :20 to 10:1, particularly 1 : 10 to 5: 1,especially 1 :3 to 3: 1.