Methods used to collect the fish
The majority of the fishes taken for this food-habit study were collected in the Virgin Islands and Puerto Rico (a few were taken at other West Indian islands). Most were collected with a Hawaiian sling spear or a multi-prong spear.
For additional information see (these two references are attached as pdf):
Randall, J. E. (1967). Food habits of reef fishes of the west indies. Studies in Tropical Oceanography, 5:665-847.
Opitz, S. (1996) Trophic Interactions in Caribbean Coral Reefs, International Center for Living Aquatic Resources Management Technical Reports (Int. Cent. Living Aquat. Resour. Manage., Makati City, Philippines), Vol. 43.