What i did when i needed to catch my yellow tail and 3 stripe is, i propped a rock up in the corner of the tank. This rock needs to be flat. I then manipulated the fish into the corner with two 5" nets. When he went behing the rock, i blocked both entrances/exits and scared him out. They swam directly into one of the nets. The little buggars fell for it both times and it only took about 5 min.
Goodluck, they are quick!
Goodluck, they are quick!
