''Cheirocerus goeldii'', is a

species A species () is often defined as the largest group of organisms in which any two individuals of the appropriate sexes or mating types can produce fertile offspring, typically by sexual reproduction. It is the basic unit of Taxonomy (biology), ...

of demersal

catfish Catfish (or catfishes; order (biology), order Siluriformes or Nematognathi) are a diverse group of ray-finned fish. Catfish are common name, named for their prominent barbel (anatomy), barbels, which resemble a cat's whiskers, though not ...

of the family

Pimelodidae The Pimelodidae, commonly known as the long-whiskered catfishes, are a family of catfishes (order Siluriformes). Taxonomy The family Pimelodidae has undergone much revision. Currently, it contains about 30 genera and about 90 recognized and know ...

that is native to Purus River basin and Das Velhas River basin of Brazil and Peru. It grows to a length of 15.2 cm. It is clearly distinguished from other species with 23-27 gill rakers.

References

Pimelodidae Catfish of Brazil Fish described in 1908 {{Pimelodidae-stub