The young woman where I work has an aquarium to which she recently added some tiny fish. Two of them bonded & spent their days in canoodling bliss. Then they contracted some kind of fungal disease & to treat them she had to separate them in different tanks for several days. The lovers have become despondent & just hover in the bottom not moving. She isn’t sure they will survive the separation. Some would call this anthropomorphism but anyone who pays attention to animals know they have profound emotional lives & this story is heartbreaking.