Photo Courtesy of Dave's Rare Aquarium Fish

Researchers have found the the fish equivalent of oxytocin, a hormone associated with human love, drives social behavior in fish. Neolamprologus pulcher were used to study why some fish develop social behaviors while others live their lives in solitude. Doses of isotocin, the fish version of oxytocin, where given to N. pulcher with some interesting results. For more information about the study, visit Science 2.0 and Discover Magazine.