Abstract
Suwannee bass,Micropterus notius, and largemouth bass,Micropterus salmoides, were collected by electrofishing in six habitats in the lower Santa Fe River, Florida during May 1981–March 1982. Both bass species were collected concomitantly in all habitats and habitat segregation was not evident. Crayfish (Procambarus spp.) were the primary food of Suwannee bass. Fish were the primary food of largemouth bass, but crayfish were common in the diet of largemouth bass ≥300 mm long. Suwannee bass have a greater throat width and consumed longer and wider forage than did largemouth bass of equal length. Available evidence suggests that Suwannee bass exhibit a positive selection for crayfish and a diverse forage resource, including abundant crayfish, is necessary for a Suwannee bass to coexist with a largemouth bass.
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