good bug?

What up guys first post here bought this Goni a week ago noticed a small mass I thought to be a baby rock flower nem at the time it was only about a half a mm very hard to see but now it’s gotta a bit larger probably almost 3 -5 mm it’s stationary and doesn’t effect the coral this pic was at...

Saw this while feeding my invert heavy tank. It is most definitely NOT a bristle worm… I have several of those in my tank and know them fairly well. This guy has a face that reminds me of a coolie loach… i think it’s been in my tank for at least 8 months. It seems to be more of a rock dweller...

I am wanting positive identification on several different creatures currently in my tank… mostly because I want to know what they are and where they are endemic to. I am building about as close to a Hawaiian Ridgeline/ central indo-pacific ecosystem with all sorts of life that’s habitat/ or has...