I've been trying to catch the Tawny Wench Shark on the Isle of Bekko. According the FFXIVAngler it requires Fish Eyes to catch. However each time I go there during the 10am to 5 pm timeslot, no matter where I go I get the "You were unable to discover anything using Fish Eyes" notice.

I have 823 gathering and 669 perception.

Any help would be greatly appreciated.