A freshwater fish found in South American rivers and creeks, sometimes used as a food fish by indigenous peoples.
From indigenous South American languages, likely Tupi or related languages of the Amazon basin. The name passed into Portuguese and Spanish colonial usage and entered English through those languages.
The guavina is a climbing perch that can actually move overland between water sources using its gill covers like feet—a wild adaptation that indigenous peoples discovered long before modern science documented it.
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