Could my nemo be sick?

[G1GY]

Maybe the clowns are fighting for turf?

A 55 gallon is big enough for young clowns, but probably won't be enough space for 4 adult clowns.

One might hiding now to avoid getting worked over by the other pair.

Just my opinion though.

Edit:

Beverly posted the same thing while I was two finger pounding my post out.