Scientific name: Geophagus steindachneri
The Red-Humped Eartheater can grow to six inches in a sufficiently large tank. This South American cichlid has a fierce appearance but is actually a rather peaceful species that can be kept in a community tank with other moderate-size fish. In the wild, it will root through muddy river bottoms looking for food. In the aquarium, it will root through the gravel, making it difficult to maintain live plants and impractical to use an undergravel filter unit for biological filtration.