creatureid

Hello everybody, I just purchased a zoa and upon cleaning it prior to introducing it to my tank I found this critter. Does anyone know what this is? I have more photos and a short video if needed. I am keeping it in a separate container for now. It looks menacing and certainly not shy, makes me...

This lil guy appeared in my tank... not 1 of the ones I remember putting in. I believe it might have been born in the tank. I know I posted a picture before of what someone identified as snail eggs, but also mentioned they never hatch. Can this possibly be the result? Also what type of snail is...

there’s a couple of them on my glass about the size of a copepod wondering if i should scrape them off?