4] The only completely monogamous species is an amoeba – Diplozoon Paradoxum – which is found in organisms of certain fish. Barash explains: “male and female meet while still young, and their bodies literally merge as one. ###>4] La seule espèce complètement monogamique est une amibe, la Dilozoon Paradoxum, qu’on trouve dans les organismes de certains poissons.