Baetis

Baetis is a genus of mayflies, which are aquatic insects that belong to the order Ephemeroptera.
Mayflies are known for their short adult lifespan, which can range from a few minutes to a few days.
They are also known for their mass emergence, when thousands or millions of individuals swarm together in a spectacular display.
Mayflies are important indicators of water quality, as they are sensitive to pollution and environmental changes.
They are also a major food source for many fish, birds, and other animals.
Baetis is one of the most diverse and widespread genera of mayflies, with at least 150 described species.
They are commonly called blue-winged olives by anglers, who use artificial flies that mimic their appearance to catch fish.
Baetis species can be found in various habitats, such as streams, rivers, lakes, and ponds.
They have a complex life cycle that involves several stages of development and metamorphosis.

A Baetis is a kind of mayfly
That has a blue wing and a tiny eye
It lives in the water as a nymph
And feeds on algae, plants and shrimp

It grows and molts many times
Until it's ready to leave the stream behind
It emerges as an adult with a slender body
And flies in the air with its mate so lovely

It only lives for a day or two
And lays its eggs in the water blue
Then it dies and falls to the ground
Where it becomes a fisherman's bait or a bird's snack around

This is how the Baetis looks like
A little insect with a short life
But don't feel sorry for this creature
It's part of nature's cycle and feature