Predator preferences for attacking particular prey group sizes: consequences for predator hunting success and prey predation risk

Article Abstract:

Per capita predation risk is less in small shoals in spite of the over-proportionately high attack risk for individuals in large shoals. Joining larger shoals should be beneficial for individual guppies. Cichlids would perform better in terms of hunting success by assaulting small rather than large shoals. It is also shown that the visual conspicuousness of the shoal and not its size is the determining factor for the cichlids' choice of a prey shoal.

Analysis, Guppies, Predator hunting, Cichlidae, Cichlids

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Shoal choice in zebrafish, Danio rerio: the influence of shoal size and activity

Article Abstract:

Zebrafish are studied for shoaling behavior in warm and cold water temperatures. The fish preferred the larger shoal in general, but the preference was reduced in colder water. Zebrafish were seen to prefer a more active shoal despite a smaller size of shoal.

United Kingdom, Statistical Data Included, Fishes, University of Leeds, Zebra fish, Zebra fishes, Herding (Animal behavior)

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