Found my new 2" watchman goby inside the inner chamber of my skimmer!. The only possable way into that chamber is through the 1/4" intake of the pump! He went in the suction of the pump and through into the skimmer. Had to remove the skimmer and unattach the pump to retrieve him. Put him up top again. Wow. Then a day later guess who did it again. Gotta block that tiny intake. Unbelievable.