What is the maximum recorded disc width cited for the Xingu River Ray?
Answer
72 cm
Literature documenting the size metrics of *P. leopoldi* provides a range for maximum recorded disc widths, with the highest cited measurement reaching up to 72 centimeters. While a more commonly cited average disc width hovers around 46 centimeters (18 inches), and lower limits might be noted around 40 cm (16 inches), the absolute upper limit captured in specimens is 72 cm. This higher figure is often attributed to the largest adult females, suggesting the true potential size might lean towards this upper range.
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