近日，江苏省苏州环境监测中心的工作人员，走进太湖重点水域及通湖河流开展底栖动物监测，首次在太湖水域记录到射线裂脊蚌、中华刺鳅，进一步印证了太湖生态环境持续改善、水生生物多样性稳步恢复。

射线裂脊蚌，又称“金银饼”，是我国特有的淡水物种，其贝壳略呈三角形，壳厚而坚硬，表面富有光泽，布有细密的同心圆肋骨。

射线裂脊蚌是自2004年生态环境部门在太湖开展例行监测以来，首次被正式记录，成为太湖水生态改善的“惊喜信号”。

与射线裂脊蚌一同现身的，还有号称“水中刀客”的中华刺鳅。

中华刺鳅是我国淡水生态系统中的重要原生物种，以虾类、小鱼为食，其最显著的辨识特征是其背鳍前部由31枚至33枚独立硬棘组成，如同一排微型匕首。这些硬棘是它们重要的自卫工具。

一鳅一蚌同框，是太湖生态修复最直观的信号：中华刺鳅偏好水草丰富、底质洁净的浅水区，对水草覆盖度和底质洁净度要求极高；射线裂脊蚌的幼体需寄生在特定鱼种的鱼鳃或鱼鳍上才能完成变态发育，其种群恢复既依赖水质改善，更离不开完整鱼类群落。二者同现，既印证太湖水质的持续向好，也表明太湖水下食物链与生态链正在逐步完善。

Schistodesmus lampreyanus and Mastacembelus sinensis are recorded in Taihu Lake，Jiangsu province

Staff from Suzhou Environmental Monitoring Center, Jiangsu province, conducted benthic monitoring in key waters of Taihu Lake and its connecting rivers. For the first time, Schistodesmus lampreyanus and Mastacembelus sinensis were recorded in Taihu Lake which further confirms the continuous improvement of the lake’s ecological environment and steady recovery of aquatic biodiversity.

Schistodesmus lampreyanus

Schistodesmus lampreyanus，also known as the "Gold-Silver Disc," is a freshwater species endemic to China. Its shell is subtriangular, thick-walled, and robust, featuring a lustrous surface ornamented with fine concentric ribs.

Mastacembelus sinensis

Spotted together with Schistodesmus lampreyanus is Mastacembelus sinensis, also known as "Swordsman in Water".

Mastacembelus sinensis is an important native species in China. It feeds on shrimps and small fishes. Its most distinctive feature is the front part of its dorsal fin, which consists of 31 to 33 separate hard spines, resembling a row of tiny daggers. These spines serve as its vital self-defense weapons.

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资料来源：苏州发布

编辑：管丽琼 校对：邓颐深 审核：何建