This isn't quite exact, but 1/4 cup of butter (so a half stick if you're in the US) is 57 grams according to the conversion chart from allrecipes below. So use just a slightly heavy 1/4 cup or 1/2 stick.
Yellowtail, including Yellowtail Jack (Seriol landei), are recognized by a yellow stripe across their body and their yellow tail. Range & Habitat: Yellowtail is caught year round, but more commonly during summer in the Pacific Coast and the Sea of Cortez. They are caught primarily with hook and line, and their average weight is 10 to 20 lbs.
The young, called fawns, have reddish coats with white spots. Adult males, called bucks, inhabiting the deserts tend to be smaller than their eastern relatives, which can weigh 300 pounds. Desert White-tailed bucks average about 200 pounds and stand about 3 1/2 feet high at the shoulders. As in most deer species, the females (does) are smaller, with an average weight of about 125 pounds.