What is going on with my saltwater tank,

[RV Reefs]

Recently, I have noticed a change in my fish‘s behavior. My six line and angel were fighting but they resolved it and there hasn’t been fighting for 2 months. Now my six line is hiding, and my cherub angel is pale around the gills, what is going on? The salinity is .28 but my fish have been in this salinity for around a year and they have been fine. Normally, it is at .25 but my salinity rises very quickly. the only other tank mates are an emerald crab, some hermits, a skunk cleaner shrimp, and 2 clowns. I also have 2 hammer corals, a zoa, and a ducan. Do any of you know what is going on.

 

[dstockwell]

Need pictures under white so a medic can help

 

[Waters]

May or may not be related, but I would look into an ATO to keep your salinity stable.