Do fish have allergies?

Most of us have some experience with allergies: maybe it’s pollen or a pet that makes us sneeze, or maybe there are certain foods we can’t eat. But do other creatures have allergies too? Are fish sniffling and sneezing underwater? We asked biologist Laura Zimmerman to help us understand.  Got a Moment of Um question for us? Go to BrainsOn.org/contact to send it to us, and we’ll go fishing for the answer.