Threespine sticklebacks are generalist carnivores and prey on limnetic and littoral invertebrates. Limnetic ecotypes in lentic environments feed on zooplankton, while benthic ecotypes feed on bottom-dwelling invertebrates in the littoral zone. Common benthic prey items include crustaceans (Amphipoda) and larval insects (Chironomidae). Threespine stickleback exhibit a predation cycle that consists of search, pursuit, attack, and capture components.
Animal Foods: eggs; insects; aquatic or marine worms; aquatic crustaceans; zooplankton
Foraging Behavior: stores or caches food
Primary Diet: carnivore (Insectivore , Eats non-insect arthropods, Vermivore); planktivore