With the addition of the torch coral and the new location for the xenia, we had to work a bit on the placement of the blowers in the tank. Now instead of having a basic clockwise flow around the edges, we have two back-to-front diagonal currents from each of the back corners. The corals (as hoped) seemed to love it, but the surprising effect is that it’s completely changed the behavior of the fish. Click and Clack love playing in the currents in the middle of the tank now, which impinges on the gramma’s turf, and it appears that there’s been something of a challenge to the current hierarchy. For example, Click (the braver of the clowns) stood his ground when the gramma tried to intimidate him away. (Clack held out for a few seconds, then retreated until things looked safe again.)
They’ve even been around to the far right side of the tank, which is usually a no man’s land. The gramma has also been out and about on the left side of the tank more. Wonder if this will keep up?