Ocean sunfish have two larval stages. Larvae in the first tetradon-like stage are round and spines protrude from the edges of their body. They have a well-developed tail and caudal fin (Bass et al., 2005; Muus, 1964) During the second larval stage, the tail is completely absorbed and spines disappear (Bass et al., 2005). Larvae generally measure about 0.25 cm in length (Pope et al., 2010). Juvenile ocean sunfish grow at an considerable rate, averaging 0.02 to 0.42 kg/day and sometimes reaching 0.82 kg/day (Pope et al., 2010).
- Bass, A., H. Dewar, T. Thys, J. Streelman, S. Karl. 2005. Evolutionary Divergence among lineages of the Ocean Sunfish family, Molidae (Tetraodontiformes). Marine Biology, 148: 405-414.
- Pope, E., G. Hays, T. Thys, T. Doyle, D. Sims, N. Queiroz, V. Hobson, L. Kubicek, J. Houghton. 2010. The biology and ecology of the ocean sunfish Mola mola: a review of current knowledge and future research perspectives. Reviews in Fish Biology and Fisheries, 20/4: 471-487.