“…7 Zebrafish is one of such extensively used organisms in various research fields, 8 such as learning, 9 memory, 10 motivation, 11 and addiction. 12 Simpler and evolutionarily ancient vertebrate brain, 13 neurochemistry, 14 and neuroendocrine responses similar to mammalian 15 are the distinct features established in zebrafish. Further, these features have favoured them as a potential candidate for investigating the intricate functions of the human limbic system.…”