please help me id!

So, I joined the fish keeping hobby about a year ago. I started off with just bettas than tried a rainbow shark and danios(it didn’t workout well) so I moved on to an angel fish and guppies along with my bettas. My girlfriend however became interested in starting a community tank so we set up...

So this morning, I look in my new tank, and I see a little red creature quickly pop out of the base of my torch euphilia. I can only describe it as looking like a marine venus fly trap- and if I get to close or move quickly while observing it, it disappears into my torch coral! I can only see it...