Roi Holzman

TL;DR: The model indicates that the pressure gradient in front of a fish that is feeding by suction, associated with the gradient in water velocity, results in a force on the prey that is larger than drag or acceleration reaction, even when other features of the suction flow are held constant.

TL;DR: The results suggest that coral reef habitats promote the evolution of both trophic novelty and morphological diversity within fishes, and the preservation of coral reefs is necessary to safeguard current biological diversity but also to conserve the underlying mechanisms that can produce functional diversity in future.

TL;DR: The in situ rate of zooplanktivory by a common, nocturnal coral-reef fish, Apogon annularis, was measured to assess the effects of light, prey density, and flow on the fish’s predation and it was demonstrated that Nocturnal vision in A. Annularis is sufficiently sensitive to allow a remarkable detectability of large prey in its natural habitat.

TL;DR: It is concluded that first-feeding larvae experience “hydrodynamic starvation,” in which low Reynolds numbers mechanistically limit their feeding performance even under high prey densities, providing a hydrodynamic perspective on feeding of larval fishes that focuses on the physical properties of the larvae and prey, rather than on prey concentration and the rate of encounters.

TL;DR: In situ observations using an infrared-sensitive video camera revealed that, unlike crevice-dwelling fishes, fish that spend the night in living hard corals exhibit a unique sleep-swimming mode that is characterized by energetic, high-frequency fin motions.