Despite the environmentally relevant exposure route, laboratory dietary BaP exposure studies in fish are scarce. In one, zebrafish were fed ad libitum twice a day 0, 19, or 110 g BaP/g diet for 260 days as part of a larger experiment to investigate effects onr etinoids and reproduction (Alsop et al., 2007). BaP did not affectreproduction (number of eggs produced or fertilization success),and no deformities were observed in 36 hpf embryos. Inconsisten-cies in results between Alsop et al.’s experiment and the work in thisstudy can be explained by fundamental differences in experimentaldesign: for example, here fish were fed 10, 114, or 1012 g BaP/gdiet at a feed rate of 1% body weight twice/day for 21 days beforecollecting eggs. By contrast, they fed fish up to 110 g BaP/g diet