Nevery really used one of those. my guess would be you would have to have the fish backed up in its cave and slurpem up or just dive slowly and make very slow movements while next to the fish you want.
what kind of fish are you trying to catch and where???
just curious. I wanted to do the same, just not the right kind of fish in my area.
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60g tank water chem stays pretty constant and good. pair false percs, fire gobies, sand sifter gobie, scallop, cleaner, peppermint, and coralbanded shrimp, plus cleaner crew+chaeto
"Sold" Now starting a Nano tank 10g. | 
