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Oxydoras kneri, commonly known as Kner’s ripsaw catfish, is a freshwater catfish species from the family Doradidae, also known as thorny catfishes. The species is recognized for its armored body, strong pectoral spines, and a row of sharp bony plates along the sides.
This species has an elongated body, a broad head, and long barbels used for locating food on the river bottom. Like many doradid catfishes, it is mainly nocturnal and feeds on various bottom-dwelling organisms and organic matter.
Oxydoras kneri is a relatively large catfish that can grow to around 70 cm in total length.
The species is native to the La Plata basin in South America and occurs in the Paraná and Paraguay river systems, with records also known from the Uruguay River basin.
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