What is a "fish-fly"?

A fish-fly, also known as a mayfly, is an aquatic insect belonging to the order Ephemeroptera. It is characterized by its delicate wings, elongated body, and long tail. The fish-fly undergoes a fascinating life cycle, spending most of its life as an aquatic nymph before emerging as a winged adult. The adult fish-fly has a short lifespan, typically only a few days, during which its main goal is to mate and reproduce. It is often found near bodies of water, where it lays its eggs. The fish-fly plays an important ecological role as a food source for other animals, and its emergence is often associated with the arrival of spring or summer.