Original description:
- Kullander, Sven & H. Nijssen. 1989. "The Cichlids of Surinam (Teleostei: Labroidei)". E. J. Brill, Leiden. Cichlids Surinam. i-xxxii + 1-256 (crc00290)
Type species: Acara guianensis Regan, 1905 (original designation).
Described species included (6):
valid: 6- Acara guianensis Regan, 1905 (valid)
- Aequidens potaroënsis Eigenmann, 1912 (valid)
- Aequidens itanyi Puyo, 1943 (valid)
- Aequidens paloemeuensis Kullander & Nijssen, 1989 (valid)
- Krobia xinguensis Kullander, 2012 (valid)
- Krobia petitella Steele, Liverpool & López-Fernández, 2013 (valid)
Potentially undescribed species (2):
- sp. 'red eyes' (undescribed)
- sp. 'oyapock' (undescribed)