Just saw this and am concerned for
My royal gramma, he was always out and about since I got him a month ago, was eating pellets and frozen brine shrimp but for the last 3 days he is hiding out in a cave under the rock. Doesn't seem to come out to feed. Did get a new yellow clown goby but the royal was acting like this before I hot the new fish. Water parameters are best I h r had as added a skimmer last week. 20g tank with fire shrimp, baggai cardinal, star fish and couple of hermits and snails. All else seems well. Any advice would be welcomed.
New to this so all advice and suggestions are welcome.
Aiming to upgrade tank lighting and hardware so can progress to corals and larger tank in future. Slow and steady process