 Tribal authorities are investigating an abandoned gill net found on Malax Lake that contained 67 dead walleyes. Last week's find has revived the controversy over tribal fishing on Malax where the walleye population has been on a long-term decline. Malax is co-managed between the state and eight Ojibwe bands that have court-affirmed treaty rights to net and spear a portion of the lake's walleyes. Charlie Rasmusman, spokesperson for the Great Lakes Indian Fish and Wildlife Commission, says Fond du Lac band, conservation officials have begun an investigation. He says the 112 pounds of walleyes in the net will count against the band's quota. Only members of the eight bands may keep walleyes from the lake this year. For state-licensed walleye anglers, it's the third consecutive summer of catch and release only.