To determine age and growth rate of the Spanish mackerel Scomberomorus maculatus, the Bay of Chetumal, Mexico was sampling in October-December 1989 and March-June 1990. Of 780 individuals collected, fltrk length and weight were measured in 480 (from these, 200 otoliths were extracted). Indirect methods were applied to length-frequency analysis and were v-alidated by comparison with otolith readings with the T -student test applied to ¡he age classes estimated by every method pairo
Keywords: age, chetumal bay, growth, otolith, scomberomorus maculatus