You netted a juvenile mackerel, Tim. Most likely it's a Spanish mackerel, Scomberomorus maculatus, but it could also be a cero mackerel, S. regalis. These two species are easily distinguished as adults by differences in the pattern of yellow spots/stripes on their sides, but juveniles have paler, often indistinct markings. A trait shared by these species — and which is obvious on the fish you netted — is a gradually sloping lateral line, as opposed to the abruptly sloping lateral line of king mackerel, S. cavalla. Both Spanish and cero mackerel range as far north as Massachusetts, but the cero is common throughout the Bahamas and Caribbean, while the Spanish mackerel, reported from Cuba and Haiti, is apparently absent from the Bahamas. Additionally, the cero ranges south to Brazil, while the Spanish mackerel is replaced by the Serra Spanish mackerel, S. brasiliensis, south of the Yucatan Peninsula.