Select demersal fishes were collected in Santa Monica Bay, California, and inspected for ectoparasites. Infection levels (prevalence and mean intensity) of parasites were determined on fishes representing Scorpaeniformes (Scorpaenidae: scorpionfishes and rockfishes) and Pleuronectiformes (Paralichthyidae, Pleuronectidae, Cynoglossidae: flatfishes). Hosts examined totaled 4,128 individuals representing 18 species, and ectoparasites were removed (2,547 parasites, made up of copepods, isopods, monogeneans, and leeches). Three parasite range extensions and 31 new host records are reported in this study. Prevalence ranged from 0 to 100%; mean intensity ranged from 0 to 14.