Data from: The pursuit strategy of predatory bluefish

A predator's ability to capture prey depends critically on how it
coordinates its approach in response to a prey's motion. Flying
insects, bats, and raptors are capable of capturing prey with a strategy
known as parallel navigation, which allows a predator to move directly
toward the anticipated point of interception. It is unclear if predators
using other modes of locomotion are capable of employing this strategy
when pursuing evasive prey. Using kinematic measurements and mathematical
modeling, we tested whether bluefish (Pomatomus saltatrix) pursue prey
fish (Fundulus heteroclitus) with parallel navigation. We found that the
directional changes of bluefish were not consistent with this strategy,
but rather were predicted by a strategy known as deviated pursuit.
Although deviated pursuit requires few sensory cues and relatively modest
motor coordination, a comparison of mathematical models suggested
negligible differences in path length from parallel navigation, largely
due to the acceleration exhibited by bluefish near the end of a pursuit.
Therefore, the strategy of bluefish is unlike flying predators, but offers
comparable performance with potentially more robust control that may be
well-suited to the visual system and habitat of fishes. These findings
offer a foundation for understanding the sensing and locomotor control of
predatory fishes.