No way in hell that these things only go up to 34.
While fishing in Bibiki today, I pulled one of these up as a 43mnk/21war. Took about 670hp off me during the fight. Regular attack for 56-68, and double attack for twice that(Obviously).
I cant imagine that something 10 levels below me could possibly take me down that far. Also, before using a Mithkabob, it checked as Ep-Low evasion. I have 55str, and 190somthing attack, so it definetly has to be higher then 34.
While waiting for my mages to heal in Korroloka Tunnel, I decided to do some fishing with my lvl 20 war. That was a mistake. After losing my catch once I fished up one of these and it killed half of my party (including me). It was more funny than anything else (my party has a good sense of humor), but they didn't let me forget it.
I'm almost certain I was killed by one in Ghelsba Outpost a while back also. Players like to fish in the river off the bridge a couple of levels up, so I guess someone pulled one up. I ran in not checking the name, assuming it was just a Ghelsba Pugil. I was promptly stomped (believe I was level 14 at the time ;) ).