Lanceolate Whiptail Catfish

Rineloricaria lanceolata occurs across a broad range of Andean-influenced river systems in Peru, Ecuador, and Colombia. It is found in moderately flowing rivers with sandy or silty substrates, often resting flat against the bottom where its banded and spotted pattern provides effective camouflage. It is somewhat larger than Rineloricaria fallax but shares the genus's general hardiness in captivity.

In the aquarium, this species benefits from a sand or fine-gravel substrate that allows it to rest naturally against the bottom. It will graze algae from glass and wood but should be supplemented with algae wafers and fresh vegetables. Driftwood enhances its sense of security and provides additional grazing area.

Rineloricaria lanceolata breeds readily in captivity using hollow tubes as spawning sites. Males guard egg clutches and fan them vigorously. The fry hatch in approximately 7–8 days and are straightforward to raise on finely crushed algae wafer and blanched spinach.