I've had my female mandarin for around 3.5 to 4 yrs now. Shes been doing real good up til recently. Quick specs on set-up: 75 gal, 100+ lbs of rock, smallish fuge with about 5gal section for cheato. Tank mates are Fox Lo, small BiColor Angel, sailfin blenny, Yellow Flanked Wrasse. The wrasse...