Baby bristle worm?

[Asserted]

Can’t find much that match exactly what I am seeing. Is this a bristle worm or something else? It’s in a cycling tank that I used a live rock from my other tank. Do not have anything that looks like this in other tank that’s abundant and I can find. It was burrowing.

 

[winxp_man]

That doesn’t look like a bristle baby.

 

[JGT]

Not a bristleworm. Shape looks shrimp-like.

 

[Danroo]

spionid worm possibly.

 

[EnterName]

It's a Tanaid (2nd post on page 6 for mobile users. Overall post #102)

 

[Asserted]

It's a Tanaid (2nd post on page 6 for mobile users. Overall post #102)

AMAZING!! Spot on, thank you very much!!

 

[Asserted]

Thank you everyone!