There has been a recent surge of interest in studying fish cognition. Fish perceptual and cognitive abilities compare very well to other vertebrates on most tasks (Brown, 2015). For example, there are parallels between fish and non-human primates on many social cognition phenomena such as individual recognition, cooperation, eavesdropping, social learning, cooperative hunting, cheating, punishment, and altruism (Bshary et al. 2002). We are studying a number of topics including visual object perception, perceptual constancy, and numerical perception in goldfish in our lab at RIT. We investigated the visual features used by fish to discriminate among objects such as geometric and complex shapes (DeLong, Keller, Wilcox, Fobe, & Keenan, 2018). In another line of research, we presented goldfish with a relative quantity judgment task to assess their numerical abilities. Our study suggested that fish given extensive training (over 1000 trials) can achieve accuracy on a numerical task comparable to well-trained birds, humans, or non-human primates (DeLong, Barbato, O'Leary, & Wilcox, 2017). We are currently examining the ability of fish to identify 2D and 3D objects despite changes in orientation (DeLong, Fobe, O'Leary, & Wilcox, 2018) .