Chelon possesses the elongated body and dorsal fins typical of the order Mugiliformes, with frontal fins defined by four spines and anal fins with soft rays. The maximum sizes described vary between 15 cm for the Cape Verde mullet and 32 cm for the thicklip grey mullet.[3]
They are catadromous fishes, meaning that they can be found in lagoons and rivers as well as the sea during the reproductive season, fundamentally feeding on algae and diatoms.[4]
Recent cladistic analysis recovered Chelon as paraphyletic with respect to Liza, so some species of Liza were reassigned to Chelon and Liza synonymized with Chelon.[5][6]
^Thomson, J.M., 1990. "Mugilidae". p. 855-859. In J.C. Quero, J.C. Hureau, C. Karrer, A. Post & L. Saldanha (eds.) Check-list of the fishes of the eastern tropical Atlantic (CLOFETA). JNICT, Lisbon; SEI, Paris; UNESCO, Paris. Vol. 2.
^Ben-Tuvia, A., 1986. "Mugilidae", pp. 1197-1204. In P.J.P. Whitehead, M.-L. Bauchot, J.-C. Hureau, J. Nielsen & E. Tortonese (eds.) Fishes of the North-eastern Atlantic and Mediterranean. Volume 3. UNESCO, Paris.
^Durand, J.-D., Shen, K.-N., Chen, W.-J., Jamandre, B.-W., Blel, H., Diop, K., et al. 2012. Systematics of the grey mullets (Teleostei: Mugiliformes: Mugilidae): molecular phylogenetic evidence challenges two centuries of morphology-based taxonomy. Mol. Phylogenet. Evol. 64, 73–92. doi: 10.1016/j.ympev.2012.03.006
^Durand, J.-D., W.-J. Chen, K.-N. Shen, C. Fu, & P. Borsa. 2012. Genus-level taxonomic changes implied b mitochondrial phylogeny of grey mullets (Teleostei: Mugilidae). Comptes Rendus Biologies, 335: 687-697.