A tilefish may weigh up to 50 lbs and often weighs between 10-35 lbs. The great northern tilefish, which reaches 40 to 66 lbs, is the biggest species of tilefish. The yellow tilefish, which is the smallest tilefish and is found in shallow areas, can weigh up to 0.11 lbs. The golden tile or golden tilefish are other names for the great northern tilefish.