Gasteropelecus sternicla is a South American freshwater hatchetfish admired for its thin, hatchet-shaped body, bright silver coloration, and unique habit of swimming just beneath the water surface. Its calm schooling behavior adds a delicate presence to the upper layer of the aquarium, creating a more three-dimensional aquascape when kept with peaceful midwater and bottom-dwelling species. When keeping Gasteropelecus sternicla, it is important to use a secure lid to prevent jumping, provide gentle water movement, stable clean water, and suitable floating or surface-feeding foods, while avoiding aggressive tank mates so this elegant surface-dwelling species can remain healthy and settled.
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