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Updated: Mar 3, 2026

A Fish-feeding Laboratory Bioassay to Assess the Antipredatory Activity of Secondary Metabolites from the Tissues of Marine Organisms
Published on: January 11, 2015
Squid predation by slender sunfish Ranzania laevis (Molidae)
M Nyegaard1, N Loneragan1, M B Santos2
1School of Veterinary and Life Sciences, Murdoch University, South Street, Murdoch, 6150, Western Australia, Australia.
Abstract:
In addition to crustaceans, remains from 17 individual squid were found in the stomach of a 58 cm slender sunfish Ranzania laevis from Australia, adding a new prey item to their little studied diet. Taken together with existing data from the literature, crustaceans appear to be a common prey item, with larger R. laevis (26-65 cm) also taking small fish and squid. Along with new documentation on breaching, the unexpected finding of squid in the stomach confirms that these fish are fast and agile predators.
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