Abstract：
Black ruff (Centrolophus niger) is a rare and poorly studied species found in both the Atlantic and Pacific Oceans and also in the Mediterranean Sea. It is sporadically caught south of Iceland during the annual International Ecosystem Summer Survey of the Nordic Seas. In total, 43 specimens were caught from 2009 to 2021, of which 41 specimens were caught during 2017-2021. All specimens, except one, were caught using a pelagic trawl (cod-end mesh-size: 50 mm) close to the surface (trawl depth: 0-35 m) with in situ temperature ranging from 9 to 13°C. The area south of Iceland is characterized by having warmer temperatures than other areas around the island, which might be indicative of a northern limit for the distribution of black ruff. The fish were primarily in the range of 29-46 cm with a few larger individuals up to 71 cm. Fourteen fish, caught in 2017 and 2021, were dissected to gather biological information on this species. These fish were all juveniles with no obvious sign of gonad development. Correlations between total length, fork length, and standard length are presented. Otoliths were thin and delicate with a length of ~13-16 mm, and otolith size (length, width, and area) was correlated with fish size. Much of the stomach content was at an advanced stage of digestion, but some contents could be identified and consisted of invertebrates, primarily of the orders Amphipoda and Calanoida with some unidentified fish also present.
摘要：
黑皮（Centrolophusniger）是在大西洋和太平洋以及地中海中发现的一种稀有且研究很少的物种。在每年的北欧海洋国际生态系统夏季调查中，它偶尔在冰岛南部被捕。总的来说,2009年至2021年共捕获43个标本，其中2017年至2021年共捕获41个标本。所有标本,除了一个,在9-13°C的原位温度范围内，用靠近表面（拖网深度0-35m）的浮游拖网（鳕鱼末端网眼尺寸为50mm）捕获。冰岛南部地区的特点是气温高于岛上其他地区，这可能表明黑色褶皱分布的北部限制。鱼主要在29-46厘米的范围内，有一些较大的个体高达71厘米。14条鱼,在2017年和2021年被捕，被解剖以收集有关该物种的生物学信息。这些鱼都是幼鱼，没有明显的性腺发育迹象。总长度之间的相关性，叉长和标准长度。耳石薄且细腻，长度约为13-16毫米，耳石大小（长度，宽度和面积）与鱼的大小相关。大部分胃内容物处于消化的晚期阶段，但一些内容物可以被识别并且由无脊椎动物组成，主要是两栖动物和Calanoida，还有一些身份不明的鱼。
