Territorial boundaries of the male beaugregory damselfish

On six separate occasions during a two month period, there were no significant differences in mean attack distances by territorial male beaugregory damselfish Stregastes leucostictus against male conspecifics, bluehead wrasse Thalassoma bifasciatus and striped parrotfish Scarus iserti . Feeding areas and patrolling areas were typically smaller than attack distances. The presence or absence of eggs, or the quantity of eggs within the male's territory also was not significantly correlated with attack distances. © 2000 The Fisheries Society of the British Isles