Results of host fish infection trials using glochidia of Elliptio complanata from Susquehanna River (PA) and Chester River (MD) watersheds, conducted between 1999 and 2008. Asterisk indicates early studies in which no fish counts were kept for select trials; numbers of glochidia and juveniles from trials with no fish counts are shown in parentheses. Numbers of glochidia and juveniles per fish were calculated only for trials with fish counts. No. trials represents the total number of infection trials conducted; No. fish, the total number of fish infected among all trials; No. shed gloch, the total number of shed glochidia observed across all trials for a given fish species; Days to shed gloch, days of the experiment during which shed glochidia were observed; No. gloch per fish, the total number of glochidia observed for a given fish species divided by the total number of fish tested of that species; No. juvs, the total number of juvenile mussels observed across all trials for a given fish species; Days to meta, days of the experiment during which metamorphosed juvenile mussels were observed; No. juvs per fish, the cumulative number of juveniles recovered during all trials of a given fish species divided by the cumulative number of fish of that species tested; Meta success, metamorphosis success for each fish species, or total number of juvenile mussels observed for a given fish species divided by the total number of glochidia and juvenile mussels observed for that species. See Table S1 (Supplemental Material) for detailed results of each trial, including water temperatures ranges and numbers of glochidia and juveniles observed.