There is not a lot known of
this family in the aquatic literature. There are five
species known, N. furcatus Ribeiro, Pedroza
& Rapp Py-Daniel, 2011, N. lanceolatus
Eigenmann & Eigenmann, 1889, N. mariai,(Schultz, 1944), N. panamensis (Bussing,
1970), and N. pauciradiatus Ferraris, 1988.
The thumbnail image shown could be one of those named
species or a new discovery.