Photographic Prints › Pair of Koch's Barking Geckos (Ptenopus kochi) Image 1 of 1 Pair of Koch's Barking Geckos (Ptenopus kochi) from $19.99 This is a high-resolution photographic print on glossy photo paper of a pair of Koch’s barking geckos (Ptenopus kochi). Size: Select Size 8x10" Glossy 11x14" Glossy Quantity: Add To Cart Added! This is a high-resolution photographic print on glossy photo paper of a pair of Koch’s barking geckos (Ptenopus kochi).