There is a knowledge gap in descriptions of sound production in freshwater fishes. Here, we provide the first description of sound production in rock bass (Ambloplites rupestris) in their natural habitat. We used an action camera to record six calls from a rock bass in Stoney Lake, Ontario, and two calls from a rock bass in the Otonabee River, Ontario. Calls were associated with opening the mouth, flaring the opercula, and moving the pectoral and median fins erratically while the fish approached a novel object (our camera anchor). Rock bass calls ranged from 0.3 to 28.6 (mean = 9.32) s in duration and consisted of 2–62 sound pulses (mean = 22.7). Individual sound pulses had a mean duration of 0.065 s and a mean interval of 0.43 s. Pulse frequency was bimodal with a mean lower peak at 158 Hz and a mean upper peak at 362 Hz. We compared the calls of rock bass to those of other centrarchids from the literature and found that the sounds were structurally similar. Future studies should investigate rock bass sound production in captivity, the mechanisms of sound production in rock bass, the role of acoustics in rock bass ecology, and systematically describe sounds so they may be used in passive acoustic monitoring.

对淡水鱼健全生产的描述存在知识空白。在这里，我们首次描述了摇滚鲈鱼 ( Ambloplites rupestris ) 在自然栖息地的发声情况。我们使用运动摄像机记录了来自安大略省斯托尼湖的摇滚鲈鱼的六个叫声，以及来自安大略省奥托纳比河的摇滚鲈鱼的两个叫声。当鱼接近一个新物体（我们的相机锚）时，叫声与张开嘴、张开鳃盖以及不规则地移动胸鳍和中鳍有关。摇滚贝司的叫声持续时间为 0.3 至 28.6（平均值 = 9.32）秒，由 2-62 个声音脉冲（平均值 = 22.7）组成。单个声音脉冲的平均持续时间为 0.065 秒，平均间隔为 0.43 秒。脉冲频率是双峰的，平均下峰值为 158 Hz，平均上峰值为 362 Hz。我们将摇滚鲈鱼的叫声与文献中其他拟贝类的叫声进行了比较，发现声音结构相似。未来的研究应该调查圈养的摇滚低音声音的产生、摇滚低音声音产生的机制、声学在摇滚低音生态学中的作用，并系统地描述声音，以便它们可用于被动声学监测。