Geophagus pellegrini, commonly known as the Pellegrini Eartheater, is a species of cichlid native to the rivers of Colombia in South America. This fish is distinguished by its elongated body, prominent forehead hump, and striking coloration, featuring shades of blue, green, and red. Pellegrini Eartheaters are named for their habit of sifting through substrate with their mouths to find food, a behavior common to the Geophagus genus.

They thrive in well-maintained aquariums with soft, slightly acidic to neutral water conditions, temperatures ranging from 75-82°F (24-28°C), and plenty of hiding spots created with rocks and driftwood. These fish are generally peaceful and can be kept with other non-aggressive species. A varied diet including high-quality pellets, flakes, and live or frozen foods is essential to keep them healthy.

Pellegrini Eartheaters are known for their unique breeding behavior, where the female lays eggs in a pre-dug pit and both parents guard the fry after hatching. This species is appreciated by aquarium enthusiasts for its beauty and interesting behavior.