My tank is approaching 4mths. My mandarin was introduced into my tank only after a month! (Big Mistake!!) it was getting quite thin before early this month, she decided to start eating brine shrimp (to my relief)... Anyway please don't don't attempt to keep this fish unless you have a good supply of PODS or live rock avaliable for it to survive!!
Yup, it is really hard to maintain the salinity of a small tank due to evaporation and faning. Another major problem i faced, is finding a suitable small filter system! Yup I am currently keeping all hardy fish...
here are the list of fish I am keeping for the past 2-3 months:
1 Bali clown
1 blue damsel
1 domino damsel
1 Black Yellow damsel
1 Mandarin
1 Bi color blenny
1 Fire shrimp
1 Majestic lobster
1 blue feet hermit
1 common brown hermit
1 royal gamma
2 turbo snails
1 unknown crab