weakie

noun3

1. •
   (Australia, slang) A weak, unreliable or mediocre person or thing; a weakling.
2. •
   (rare) An unskilled player.
3. •
   (US, informal) A weakfish.

   • Although the weakie has no chopping teeth comparable to those of a bluefish, he boasts a pair of extremely sharp canines in his upper jaw. — 1959