Unlike the typical “reef fish” outfitted with gaudy colors and intricate patterns, Lookdowns present a truly singular vision: a wafer-thin, laterally compressed body with tiny, mirror-like, highly reflective silver scales, high-set eyes, low-set mouth, steep, concave forehead, long dorsal and anal fin extensions, wing-like pec- toral fins, and deeply forked caudal fin—all signs of a predator designed for speed and agility. Because of their unique appearance, large shoals of Lookdowns, chromed to the gills, are often selected for public aquarium displays. These are naturally schooling fish, members of the Carangidae (Jacks and The Lookdown,
Selene vomer
, is one of only a few iconic “big ocean” marine species that are sometimes kept in home aquariums.
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