In Iquitos, Peru, Pseudorinelepis genibarbis is known as carachama sin costilla, which actually means "Loricariid without ribs"; this refers to the trait that it shares with other Rhinelepini catfish; members of this tribe do not have ribs past the sixth vertebra.
In Iquitos, Peru, Pseudorinelepis genibarbis is known as carachama sin costilla, which actually means "Loricariid without vertebral structure"; this refers to a characteristic it shares with other Rhinelepini catfish; members of this tribe do not have ribs beyond the sixth vertebra.