My two yellow finned mbamba males are acting distressed !!! Hiding in caves, not coming out to eat, breathing rapidly. Everyone else is doing fine. Tank History: Added the following to cycled tank on 11/6: 6 yellow labs (1m/5f) 4 scolofi (unsexed juvies) 6 yellow fin mbamba's (2m / 4f) I've checked water quality every 2-3 days with a API test kit (always 0/0/5). I noticed that the sub dominant male has been hiding a bit more last few days...but still came out to swim and eat. The brighter color male always made himself visible. This morning I didn't pay to much attention to the fish and did my weekly water change (so not sure if the same behavior was there before the water change). Anyway did about a 35-40% water change using a python, added water back near same temp (by checking with thermometer from the sink). Added prime (double dose). Afterwards noticed the 2 males not swimming around ....this evening found them both in a cave in same corner. I thought maybe one was holding the other hostage, so I moved a few rocks and got them to separate....now both are hiding in their own little cave else where. On both of them there is No physical damage , not even a frayed fin...nothing !! Not sure what is going on , very distressing. I don't have another tank....Just used a extra 5 gallon for a betta last week. And loaned out a extra 10 gallon, should get back next week though. Extra tank is on my christmas list....and of course I could use one now !!!