Hippos swim alongside habitat fish at Memphis Zoo

A “mutualistic relationship” between the Memphis Zoo’s hippos and habitat fish has been formed as the two parties hang out with one another — and it’s been proven to have multiple benefits.A “mutualistic relationship” between the Memphis Zoo’s hippos and habitat fish has been formed as the two parties hang out with one another — and it’s been proven to have multiple benefits. Read Moref387eb60-6334-54d5-b961-299d798050bf, fnc, Fox News, primary_lifestyle, 3play_sameday, viral_acq, science|wild_nature, video The Latest & Breaking Videos on Fox News