1 cm long Red Nematode-like Worm in the Pool Water
I love your website, What’s That Bug. I’ve used it dozens of times to identify insects around my neighborhood and workplace. Now I’d like to try your amazing knowledge on these little wigglers! Every spring when opening our family above-ground pool, I find hundreds of 1 cm long red segmented nematode-like very wiggly worms in the pool water. They have a small black head, small legs near the head, a forked tail, are semi-clear with a dark gut, and are very wiggly. So what are they?
These are Bloodworms. Bloodworms are the aquatic larvae of non-biting Midges in the genus Chironomus. They are a prized live food for tropical fish kept by aquarists.