Table 2.

Visual stomach contents including percent prey contribution (%N), frequency of occurrence (%O), percent weight (%W), and index of relative importance (%IRI) based on 31 individuals (all Plectropomus spp. combined)

	Caesionidae	Labridae	Pomacentridae	Labridae (Scarinae)	Acanthuridae	Serranidae	Siganidae	Crustacea	Gobiidae	Apogonidae
%N	26.3	23.7	23.7	5.3	2.6	5.3	2.6	5.3	2.6	2.6
%O	32.3	25.8	19.4	6.5	3.2	6.5	3.2	6.5	3.2	3.2
%W	45.1	9.0	8.9	17.4	9.1	5.2	7.7	0.6	0.9	0.5
%IRI	34.9	16.0	15.9	11.1	5.7	5.1	5.1	2.9	1.7	1.5

Stomachs of 226 individuals (–171—P. leopardus, –43—P. laevis, –12—P. maculatus) were examined but only 31 had stomach contents identifiable to family. Prey weight was not adjusted for partial digestion, and consequently, %W and %IRI are likely underestimated for some families.