The call came when I was at work. My husband said, “Grant needs to talk to you,” and put my 7-year-old boy on the line. I’m sorry to tell you this, my son said, but the yellow fish is dead. Thank ...

Five minutes in the life of a guppy in the terrible spring of 2015: You’re swimming around with your friends in a tank. You’ve been here for days. Food falls from the sky. Everything is fine. Then ...

When Robert Heathcote dips his head into the rivers of Trinidad, he’ll often see little black dots moving through the water, even when it’s murky. Those dots are the eyes of small, inch-long fish ...