I've got a hap tank with 8 cichlids and a small area of dense rockwork simulating a rock reef edge along with lots of open space. About 1 week ago I noticed one of my haps is looking really ratty, it's the second smallest and it has some really tattered fins. I want to move it to my 30 for recovery or to later sell but for the life of me i just can't catch it. I've tried big nets, small nets and a baited trap (a standard water bottle with top cut open baited with bloodworms with no luck. the tank is a 75 and the fish in question is always evading my tactics. what can I do short of draining the tank or removing a lot of rocks to catch this fish?