white cloud mountain minnows.

[bigcheed]

Hi looking for a little advice on my white clouds. I started my first tank a 10 g four months ago. First with 2 black moores. Then added 2 apple snails 4 wcmm and a hillstream loach. The black moores were only very small when I got them and everyone got along just fine. Eventually tho the moores began to grow so they have now moved to there new home in a 33 g fluval Roma. Since removed the gold fish though the white clouds behaviour has changed. There much less active and have started hiding behind the filter. Before hand they were displaying classic spawning and play behaviour. I've done a 10% water change and added some new plants as I put the old ones in my new tank to help it cycle. They haven't lost any colour don't look sick and are eating ok. They just seem to be sulking. Water peramaters are fine. Any advice would be most welcome.