The jewelled splitfin fish Xenotoca variata have speckles, made up of iridescent scales with UV reflectance as an important component. The males of this freshwater viviparous species develop a greater number of speckles than females. Previous work has found that the speckles play a role in both mate choice and agonistic interactions. Females presented with two males often prefer the male with more speckles. Speckled males tend...

Bonefish Albula spp. in the Western Atlantic have historically been morphometrically and phenotypically indiscernible. We used biofluorescence in two sympatric, cryptic bonefish species, Albula goreensis and Albula vulpes , to develop a rapid and inexpensive in situ survey for species identification that can be used by managers and recreational anglers. Under ultraviolet (379–387 nm) and royal blue (440–457 nm) lights, the two...

An understanding of the effect of light on predator‐prey interactions in aquatic systems requires the integration of sensory physiology, behavioral ecology, and spatial distributions of predator and prey in the field. Here, we present such an integrative approach to a study on the interactions between the alewife, Alosa pseudoharengus , and the mysid shrimp, Mysis diluviana , (formerly M. relicta ) in Lake Ontario at night, wh...