That's where I have had the most success. Once that net goes in the water, they go into panic mode. If I can corner my target from the get-go I can normally get them, but once they get around and into the deco. It's tear it down or wait until another day. During a water change, my fish seem to be swimming around trying to figure out whats going on more than worried about me catching them.DJRansome said:You can remove just one section if your aquascape is done so you can shoo the fish to one end and insert a divider to isolate the last rock pile. Then you can remove just that pile. Also helps to net during a water change...half the water to narrow down escaping space.