A detailed understanding of inter- and intraspecific movement patterns is required to understand how marine species interact with surrounding ecological communities, their suscepti- bility to anthropogenic disturbance (e.g. fishing pressure), or the feasibility of management strate- gies. Between August 2010 and September 2012, we used acoustic telemetry to continuously mon- itor movements of 31 Lutjanus argentiventris (yellow snapper) and 25 Mycteroperca rosacea (leopard grouper) at Los Islotes, a small no-take reserve and reported spawning site for both spe- cies in the SW Gulf of California. Though the majority of fish from both species exhibited moder- ate levels of site fidelity to Los Islotes (snapper: present 49 ± 30% of days since tagging, grouper: 64 ± 30%), cluster analyses revealed multiple patterns of site fidelity within species. Approxi- mately 30% of snapper exhibited decreases in site fidelity during the spawning season, and snap- per did not spawn at the reserve during the study. Grouper spawning aggregations at Los Islotes were visually observed in 2011 and 2012, though the abundance of fish and the intensity of courtship behaviors were reduced in comparison with reported aggregations elsewhere in the Gulf. Three snapper and 2 grouper made repeated movements across pelagic waters between Los Islotes and Marisla Seamount, another documented aggregation site in the SW Gulf. The demon- strated variation in movements of these species over multiple temporal and spatial scales warrants consideration of movement patterns in assessments of reserve performance, as well as the combi- nation of traditional fisheries regulations (e.g. size limits) with marine reserves throughout the Gulf.