The Hippopotamyrus retrodorsalis lives in the demersal, freshwater environment.
Hippopotamyrus retrodorsalis Gosse, 1984Marcusenius retrodorsalis Nichols & Griscom, 1917; (valid as) - Hippopotamyrus smithersi Gosse, 1984Marcusenius smithersi M More
Rypoun zadoploutvý in Czech (česky)
弯背河马长颌鱼 in Mandarin Chinese
彎背河馬長頜魚 in Mandarin Chinese