“…Complementing rodent findings, the zebrafish ( Danio rerio ) is rapidly emerging as an important model organism to study impulsive (Parker, Ife, et al, 2013) and aggressive behaviors (de Abreu, et al., 2019; Gerlai, Lahav, Guo, & Rosenthal, 2000; Zabegalov et al., 2019), both highly relevant to ICDs (Figure 2 and Table 2). Zebrafish possess fully sequenced genome with >70% homology to human genes (Howe et al., 2013), shared neurotransmitter systems, well‐conserved brain circuits (Stewart, Ullmann, et al, 2015) and a potential for high‐throughput in vivo drug screening (Li et al., 2017; Macrae & Peterson, 2015; Stewart, Gerlai, & Kalueff, 2015). Zebrafish also offer several genetic and epigenetic models (Huang et al., 2015; Lakstygal, de Abreu, & Kalueff, 2018; Lange et al., 2012) that can contribute to a better understanding of ICD pathobiology.…”