Are larger bristleworms more likey to attack small fish

[Morganeb98]

What kind is this and would it attack? I thought if was a normal bristleworm

 

[62518161]

I’m betting fish was already dead.

 

[Morganeb98]

I’m betting fish was already dead.

That's what I'm thinking but my dad claimed it attacked it

 

[KING KONG]

It is rare that they kill healthy/sick fish. It looks like bristleworm so I think the fish was already dead or near to death. I had this size bristleworm in my tank, they never disturbed anything.
Double post