Proper labeling of seafood is important to prevent economic deception and protect public health. The goal of this research was to investigate prepackaged frozen fish for Country of Origin Labeling (COOL) compliance, species labeling, net weights/short weighting, and percent glaze. A total of 111 frozen prepackaged fish fillets were purchased from grocery stores in Southern California (USA). Samples were designated as COOL compliant if they displayed both procurement method and country of origin in accordance with COOL requirements. Species labeling was examined by comparing the species identified with DNA barcoding to the acceptable market names provided in the FDA Seafood List. Net weights and percent glaze were determined by recording the weight of each product before and after deglazing. Of the 111 samples, only 1 was noncompliant with COOL and 10 samples (9%) were short-weighted. The average percent glaze was 5%, with seven samples having >10% glaze. Most fish (95.5%) were correctly labeled with regards to species. Species substitution was discovered in two samples and three samples had unacceptable market names. The results of this study indicate high COOL compliance and minimal species mislabeling in prepackaged frozen fish fillets. However, there is a need for increased focus on short weighting and/or overglazing of frozen fish products.

适当的海鲜标签对于防止经济欺诈和保护公众健康很重要。这项研究的目的是调查预包装的冷冻鱼是否符合原产国标签（COOL），物种标签，净重/净重和上釉率。从美国南加州的杂货店购买了总共111种冷冻的预包装鱼片。如果样品根据COOL要求同时显示了采购方法和原产国，则被指定为符合COOL要求的样品。通过将用DNA条码识别的物种与FDA海鲜清单中提供的可接受的市场名称进行比较，对物种标签进行了检查。。通过记录上釉前后每种产品的重量来确定净重和上釉百分率。在111个样本中，只有1个不符合COOL，而10个样本（占9％）是短加权的。釉料的平均百分比为5％，七个样品的釉料> 10％。多数鱼类（95.5％）均已正确标明物种。在两个样本中发现了物种替代，并且三个样本的市场名称不可接受。这项研究的结果表明，在预包装的冷冻鱼片中，COOL的合规性很高，且物种标记错误最少。然而，需要更多地关注冷冻鱼产品的短称重和/或上釉。