I got a clown goby a few weeks ago and it mainly stayed on one side and the bta on the other. Not saying it's the culprit but the clown goby is nowhere to b found now, at the same time the bta has moved all over the place (hadn't moved for over 3 months). I had some small pieces of shrimp I usually feed it that it denied last week.
Coincidence?
Coincidence?