Jotted this down from an article couple of years back. What’s everybody think? Yeah or Neah.
Rule of thumb for fish weights of various body types.
Pike (length X length X length) divided by 3500
Walleye (length X length X length) divided by 2700
Bass (length X length X length) divided by 1600
Bluegill (length X length X length) divided by 1200
All of these will result in reasonable approximations.