"Sea birds on the wing, floating wood, or trash--a patch of silvery white on the sea in the day or a glowing red patch at night--these signs mean mullet," an old captain asserts.
但是有些老資格的船長，自稱對烏魚的出現有第六感：「如果有海鳥群飛、浮木和垃圾的出現、或是白天水域氾成一片銀白色、夜暮海水微有紅色反光，都是烏魚出現的癥兆。」