Helfman et al. Diversity of Fishes. 2009.

Clive Roots. Animal Parents.

Andrew S. Hoey, David R. Bellwood, and Adam Barnett. To Feed or to Breed: Morphological Constraints of Mouthbrooding in Coral Reef Cardinalfishes // Proceedings of the Royal Society of London. B: Biological Sciences 279 (2012). P. 2426–2432.