The Ais who lived on Cape Canaveral are no longer present to tell their stories, but they left behind artifacts that can help us learn how they managed their environmental resources. Ongoing zooarchaeological analyses from multiple prehistoric sites at Cape Canaveral have revealed a heavy reliance on marine catfishes (Ariopsis felis and Bagre marinus). This study estimates the size and weight of catfish using allometric equations from measurements of dorsal and pectoral spines and otoliths. Analyses will identify potential changes in size over time and preference in size of fish that were kept to evaluate the sustainability of prehistoric fishing practices compared to those in use today.