Pseudoras-niger

描述：

Description: Phractocephalus hemioliopterus (Amazon catfish, family Pimelodidae). Taken at the New England Aquarium (Boston, MA), December 2006. Copyright © 2006 Steven G. Johnson and donated to Wikipedia under GFDL and CC-by-SA. Note that this was initially mislabelled as Pseudoras niger, due to a confusing (or possibly outdated) label at the aquarium, hence the file name. Date: 9 December 2006 (according to Exif data). Source: Own work. Author: Steven G. Johnson.