I have a 4" managuense female that is colored up nicely, eating good showing "managuense personality" towards her tank mate. The only problem that I'm having is that sometimes she twitches her tail and dorsal fin or she curves her body. I tried ich attack and melafix, not at the same time but nothing seems to be helping. It's not a constant thing, maybe a few time a day at the most. Tank is a planted 40 breeder, 50% wc per week, 1 emperor & 1 penguin (both rated at 50 gallons). I'm getting a new test kit on Wednesday so that I can post the reading. Thanks in advance for any help.