Piscivory

Piscivory is the consumption of fish by an animal. It ranges from occasional fish-eating to specialized diets supported by adaptations for catching and handling fish.

Predator-prey interaction: An ecological interaction in which one organism captures and consumes another. Piscivory is a specialized form of this interaction, with fish as the prey.
Diet (biology): The kinds of food an organism regularly consumes. Piscivory describes one component or specialization of an animal's diet.
Fisheries ecology: The study of fish populations, their environments, and the effects of fishing. Predation on fish can affect population estimates and fisheries management decisions.
Trophic cascade: An ecosystem-wide chain of effects caused by changes in predator abundance or behavior. Changes in piscivore numbers can indirectly alter fish prey and lower trophic levels.
Foraging: The search for, selection of, and acquisition of food by an organism. Fish-eating predators balance capture effort against the energy gained from fish.
Trophic level: A position in a food chain determined by an organism's feeding relationships. Fish-eating animals occupy trophic positions shaped by the fish they consume.
Biological control: The use of living organisms to suppress populations of unwanted organisms. Fish-eating predators can be considered in managing fish populations, though outcomes depend on ecosystems.
Top-down control: Regulation of lower trophic levels by consumers and predators higher in a food web. Piscivores can limit fish populations and thereby influence their prey.
Echolocation: Biological sensing that uses emitted sounds and returning echoes to locate objects. Toothed whales use it to detect and track fish underwater.
Food web: A network of feeding relationships among organisms in an ecosystem. Piscivores connect fish populations to their predators and other food-web pathways.

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