Please ID this thing

Please ID this critter for me. my tank has been running since late August and this is the first time I'm seeing this guy. i believe its some type of baby fish.

It wiggles to swim around like a baby fish does, but it's body look like a bristle worm, i dunno if it has bristles or if its body around the red part is clear or not. it has black eyes. and the biggest one is about 3-4mm. when i turned on my room light i saw about 30 of them swimming in the open and also being blown around by the powerhead. It definitely swims, i don't see it crawling.

haven't added any rocks since i first set up the tank

let me know if you guys need more info

i have 2 clownfish, clown tang, yellow tank, fire fish, blue green chromis, 2 troches, 2 turbo, 3 stomella, 6 hermit crabs, 1 halloween crab

 

im guessing you answered your own question!

 

haha it looks nothing like a baby fish though

 

Definitely looks like a bristle worm, and yes, they are quite good swimmers. It's a rare thing to see them swimming, but they do it!

I've read they also swim while spawning. Google it - you can find more info!

 

ya i just found out they're epitokes