Agreed on the hippo tang. In that size aquarium and disease magnet.Here are my thoughts:
- Blue Hippo Tang - Notoriously unhealthy and can spread disease. Will need a bigger tank eventually
- Wantanabe Angel - Good
- 2 Clown Fish - Good
- Purple fire fish, perhaps several? - Very shy and only really work in peaceful tanks
- Orchid Dottyback - Aggressive, won't work with firefish
- Perhaps a White Tail Kole Tang - Good
- Would really love an eel, thinking about a ribbon eel - Not a good idea at all. Ill direct you to an eel thread about this.
- Leopard Wrasse - Very sensitive, must make sure its eating before purchase
- Yellow tang or similar alternative - Good
- Pink Spotted Gobe - Good
- Splattered mandarin - What blaxsun said, consider captive bred they're much easier.