Ok so about two weeks ago I purchased a
firefish goby. the first week he swam around the tank happy as can be. but about a week ago he stopped coming out of his hole. he pops his head out when i put food in, waits for a piece to float by, grabs it, and then retreats back into his tank. There are no outside markings on him that I can see and the perameters are near perfect with the exception that my salinity got to 1.028 (oops, i'm working on lowering it) Is it posible he is just lonely?I also purchased a rock with zoanthids that also had, though i didn't notice it at the time, some red slime algae, I figured it would go away on its own since it wasn't started on my tank. It hasn't. now there is this thing on the rock that looks like mold! any suggestions? i would really like to continue stocking my tank this weekend, but i don't want to endanger anything.