Help!! need to catch my Tang

[MobyDick]

I would try something like a old Glass or plastic jar...Just take say a old peanut butter plastic container,Make a hole big enough for a fish line or rope to fit through,then tie a naught inthe rope say 2feet of lenth and kind a let it rest in the tank with food in it!the fish will enter for sure..then pull him up QUICK!Ahh I dunno hope it help's!