66345 Hypopygus ortegai de Santana & Crampton, 2011 Rhamphichthyidae Sand knifefishes Gymnotiformes Teleostei Ortega's Hypopygus South America: <i>Hypopygus ortegai</i> is known from small tributaries in the upper Amazon of Peru, near the towns of Iquitos and Jenaro Herrera, Loreto (Ref. 88778).