47947 Archolaemus blax Korringa, 1970 Sternopygidae Glass knifefishes Eigenmanninae Gymnotiformes Teleostei South America: Previously known only from the Tocantins drainage in Brazil, but has recently been reported in many localities of the Amazonas basin, Rio Branco and Amapa, Brazil. MZUSP 4991 6 S 47 W Archolaemus blax CAS 24743 10 S 48 W Archolaemus blax FISH 605173 3 N 53 W Archolaemus blax FISH 605306 3 N 52 W Archolaemus blax FISH 606875 3 N 53 W Archolaemus blax