Text and photos by Heiko Bleher (Unless otherwise mentioned) Part 4 of the “Definitive guide to Elephant fishes” covers the remaining nine genera of the Elephant fishes, that is, Marcusenius, Mormyrops, Mormyrus, Myomyrus, Oxymormyrus, Paramormyrops, Petrocephalus, Pollimyrus and Stomatorhinus. I have written in Part 1 about their history, their low electric organs and some of [...]