YoĞurtÇuoĞlu Baran, Freyhof JÖrg
Hacettepe University, Faculty of Science, Biology Department, Beytepe Campus, 06800 Ankara, Turkey..
Zootaxa. 2018 Apr 17;4410(2):319-330. doi: 10.11646/zootaxa.4410.2.4.
Aphanius irregularis, new species, is described from the spring Kaklık in the Büyük Menderes River drainage in south-western Anatolia. Males of A. irregularis are distinguished from males of other species of the A. anatoliae group by having irregularly set and shaped dark-brown flank-bars often fused to each other, forming rows of vertically elongated silvery blotches and many small silvery spots or fields of small vermiculation, disconnected from silvery bar interspaces on flank. Males of A. irregularis are distinguished from males of some other species of the A. anatoliae group by having a wide, dusty grey or black anal-fin margin, often interrupted in small individuals; a narrow, white stripe or a series of white spots on the black dorsal-fin base; and often some white blotches in the middle of the dorsal fin. Females of A. irregularis are distinguished by having a vermiculate brown colour pattern, usually with a mid-lateral series of short stripes. The available molecular genetic data suggest that A. irregularis is closely related to A. maeandricus, which occurs in other springs in the Büyük Menderes River drainage. Geological data suggest that both spring complexes have not been connected until they were caught by the Büyük Menderes River in the Late Quaternary, no more than 0.8 million years ago.
描述了新物种不规则阿方鱼，它发现于安纳托利亚西南部大梅德雷斯河流域的卡卡利克泉。不规则阿方鱼的雄鱼与阿纳托利亚阿方鱼组其他物种的雄鱼不同，其深褐色侧条纹分布和形状不规则，常相互融合，形成一排排垂直拉长的银色斑块以及许多小的银色斑点或小蠕虫状斑纹区域，与侧面银色条纹间隙不相连。不规则阿方鱼的雄鱼与阿纳托利亚阿方鱼组其他一些物种的雄鱼不同，其臀鳍边缘宽阔，呈尘土灰色或黑色，在小鱼个体中常中断；黑色背鳍基部有一条狭窄的白色条纹或一系列白色斑点；背鳍中部常有一些白色斑块。不规则阿方鱼的雌鱼特征为具有蠕虫状褐色体色模式，通常有一系列中侧短条纹。现有分子遗传学数据表明，不规则阿方鱼与分布于大梅德雷斯河流域其他泉水的梅安德里阿方鱼密切相关。地质数据表明，这两个泉群直到晚第四纪（不超过80万年前）被大梅德雷斯河截获之前都没有连通。
