The distribution and abundance of larval fish in and around the condenser cooling-water system of an electric generating station on western Lake Erie was studied during the summers of 1973 and 1974. Samples were collected with a 1-m, No. 0 mesh (0.571 mm) plankton net. Analysis of variance and Tukey's post-hoc comparison were used to analyze differences in numbers of individuals collected. During the study period, 20 species of taxonomic groups were identified, although 90% of the total catch was represented by only 4 taxa. Abundances from year to year within these most abundant groups varied greatly, indicating a need for more than short-term studies.