I've been adding mosqito larva from my sisters turtle pond to my tank so my fish have some live food and variety. I started this about 4 days ago. Today I noticed a little red wormy thing in the turtle tank. It holds on to the substrate with its back end and waves its body like one of those large novilty wind socks u see at car dealerships. On close inspection it looks a little like those little green inch worms because it has what looks (to my very untrained eye) to be little legs at the front end as well.
I don't know if any made it into my tank, but if it did, I'd greatly appreciate if anyone could tell me
a) what it is?
B) what to look for, just in case
c) what I need to do