Description

Black Diamond Stingray (AA Grade)

is a premium, high-contrast variant of the Potamotrygon leopoldi freshwater stingray, originating from the Xingu River in Brazil. The “AA” designation typically refers to top-tier quality in the aquarium trade, characterized by a deep, velvety black body and large, bright, symmetrical white spots.

黑钻魟鱼（AA级）

是产自巴西欣古河的淡水魟鱼（Potamotrygon leopoldi）的优质高对比度变种。“AA”级通常代表水族贸易中的顶级品质，其特征是深邃丝滑的黑色鱼身和硕大、明亮、对称的白色斑点。