The range of the Colares stingray appears restricted to the mouth of the Amazon River in northern Brazil, in the estuarine area affected by the river's freshwater discharge; it may also occur in adjacent areas as far as Venezuela.
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The Colares stingray, Dasyatis colarensis, is a species of stingray in the family Dasyatidae, native to the shallow brackish waters of the Amazon River estuary in northern Brazil.