A free-swimming thornback ray Raja clavata specimen demonstrating significant morphological abnormality is reported, captured by beam trawl in the Irish Sea off north Wales, UK. The anterior sections of both pectoral fins were separated from the head section for a length of approximately 140 mm extending from the rostrum tip to a point posterior of the spiracles, along with abnormal morphology of the gill slits. This phenomenon has been observed elsewhere but is the first documented example of this abnormality in the eastern Irish Sea, despite widespread targeting of the species across the region by commercial and recreational fishers. Possible causes and consequences of the observed abnormality are discussed.

甲自由游动thornback射线拉加CLAVATA证明显著形态异常样本报道，通过在爱尔兰海上光束拖网关闭威尔士北部，UK捕获。两个胸鳍的前部与头部分开约 140 毫米的长度，从喙尖延伸到气孔的后部，以及鳃裂的异常形态。尽管商业和休闲渔民在该地区广泛针对该物种，但这种现象已在其他地方观察到，但它是爱尔兰东部海域这种异常的第一个有记录的例子。讨论了观察到的异常的可能原因和后果。