The name “Weakfish” was given to this fish by recreational anglers because of its fragile mouth structure, which permits a hook to tear out rather easily. Weakfish are members of the drum family, which also includes the spotted sea trout, croaker, and spot. These fish are all noted for the drumming noises they make. Rapid contraction of abdominal muscles against a resonating air bladder produces a drumming sound that can be heard by boaters.
Weakfish have a dark olive or blue-green back. Their sides are covered in tones of blue, purple, lavender, gold and copper. Irregular diagonal rows of vaguely-defined dark spots appear above the lateral line. 1 to 2 prominent canine teeth are usually present at the tip of upper jawThe pelvic and anal fins yellow. The pectoral fins are olive on the outside, yellow underneath. The mouth is yellow inside.
Here is some information for those of you interested in scientific terms and additional details:
Family: Sciaenidae, DRUMS
Genus a & Species: Cynoscion regalis
Description: The head and back of this fish is dark brown in color with a greenish tinge. The sides have a faint silvery hue with dusky specks, and the belly is white. The origin of its name is based on the weakness of the mouth muscles, which often cause a hook to tear free, allowing the fish to escape. The weakfish grows to 3 feet in length and 19 pounds 2 ounces in weight.