Reefing newb
I am almost Serbian I have at least one aptasia and another un identified creature. Correct me if I am wrong but not a great thing to have because they sting coral.

Definitely aiptasia standing tall and proud. Nuke it with Aiptasia X or lemon juice or boiling water.

The bottom one looks like a small bubble tip anemone but it isn't a real good pic so it is hard to be 100%.

By the way, what are you if you are almost Serbian?:D
All is well I picked up 3 peppermint shrimp and don't plan on feeding them till they are gone. No fish to feed yet so I took the easy way.