Lake minnow

Rhynchocypris percnurus

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Rhynchocypris percnurus, commonly known as the lake minnow, is a small freshwater fish found in shallow, often overgrown and low-oxygen water bodies such as peat bogs, oxbow lakes, and small ponds. It is considered rare and protected in many parts of Europe. It typically grows up to 8–10 cm in length. The body is slender, with olive-brown coloration and a lighter underside. During the breeding season, males may display more vivid colors. The lake minnow is highly tolerant of harsh environmental conditions, including low oxygen levels and temperature fluctuations. It feeds on small invertebrates and organic matter. This species plays an important role in small aquatic ecosystems and serves as an indicator of natural habitat quality.