According to current systematics, the genus Halargyreus Günther, 1862 is composed of a single valid, widely distributed species, called H. johnsonii Günther, 1862, although DNA barcoding has previously suggested that specimens from New Zealand and Tasmania may belong to a different species. This research doubles the number of DNA barcodes of this species available in public repositories and expands the locations of the catches thereby allowing a better estimation of its intraspecific variability. A cladistic analysis of haplotype associations shows two independent clusters that could represent different species. These groupings overlap geographically in the North Atlantic Ocean, discarding the possibility of allopatry as previously proposed for the sequences from New Zealand and Tasmania. Similarly, none of the clusters could be assigned to H. johnsonii taking into account that the holotype comes precisely from the North Atlantic Ocean. Sequences from New Zealand and Tasmania are hierarchically linked to sequences from the North Atlantic, whereas other sequences from the South Seas, together with sequences from the North Atlantic and Pacific, form an independent group with no hierarchical link to the former. These preliminary results indicate not only the need to delve deeper into the systematics of the genus Halargyreus, but also suggest the existence of a complex of cryptic species of which an attempt should be made to clarify using the combined traditional and molecular taxonomies.

中文翻译：

---

DNA条码标志着细长的鳕鱼Halargyreus johnsoniiGünther，1862年（Gadiformes，Moridae）中同胞隐性物种的存在。

根据目前的系统学，HalargyreusGünther属1862由一个有效的，分布广泛的物种组成，称为H. johnsoniiGünther，1862年，尽管DNA条形码以前曾暗示来自新西兰和塔斯马尼亚州的标本可能属于不同的物种。这项研究使公共存储库中该物种的DNA条形码数量翻了一番，并扩大了捕获物的位置，从而可以更好地估计其种内变异性。单倍型关联的分类分析显示，两个独立的簇可以代表不同的物种。这些分组在北大西洋在地理上重叠，从而摒弃了先前针对来自新西兰和塔斯马尼亚岛的序列提出的变色法的可能性。同样，任何群集都不能分配给约翰逊氏菌考虑到整型恰好来自北大西洋。来自新西兰和塔斯马尼亚岛的序列与来自北大西洋的序列在层次上相关联，而来自南海的其他序列，与来自北大西洋和太平洋的序列一起，形成了一个独立的组，与前者没有层次关系。这些初步结果表明，不仅需要更深入地研究Halargyreus属的系统学，而且还表明存在着一个复杂的隐性物种，应尝试结合使用传统的和分子的分类法来阐明它们。