"The name batmani, alludes to Bob Kane's hero Batman of the comic adventures, which had a bat shape for his symbol, referring to the single W- or bat-shaped vertical spot on the caudal fin", wrote Lehmann.
The new species was discovered from the Rio Pure in Colombia and two creeks draining into the Rio Amazonas near Iquitos in Peru. Like other members of the genus, this species is small, with most of the type specimens collected measuring just under 4cm long. link
Otocinclus batmani, a new species of hypoptopomatine catfish (Siluriformes: Loricariidae) from Colombia and Peru. 2006. P.A. Lehman. Neotropical Ichthyology, 4(4): 379-383.