I need some thoughts I setup a little fluval 13.5 and decided I wanted to play with corals a bit the aquarium had 2 oscellaris clowns 1 scooter blenny and today I added 1 coral banded shrimp and 1 emerald crab but I need advise on different corals and the kids want a starfish so what’s my best options I put some xiena and a Duncan in yesterday I have 2 soft corals no clue what they are and 1 bubble tip anemone