Estimated Fish Weights:  The weights of most game fish species can be estimated with good accuracy simply by measuring their length, usually their “fork length” which is measured from the tip of the nose to the shortest point in the “V” of the tail. This allows the pleasure of catching a fish, accurately determining its weight, and then returning it to the ocean unharmed to live another day. We have created some handy Weight From Length Conversion Tables for the major game fish of the Pacific Ocean. Please be advised that most recreational anglers over state a fishes weight by a factor of two! A representative example for the Yellowfin Tuna is presented below:

The links below provide some handy Fish Length vs. Fish Weight Charts for:

Amberjack
Dorado
Grouper Family
Hammerhead Shark, Scalloped
Pacific Crevalle Jack
Pacific Dog Snapper
Pacific Red Snapper
Roosterfish
Sailfish
Striped Marlin
Wahoo
Yellowfin Tuna
Yellowtail