In Latvia, officials are highlighting the risks fish are facing in frozen water bodies due to diminishing oxygen levels. This problem typically peaks in February and March when the cold conditions limit oxygen diffusion into the water. Species such as trout, pike, and perch are particularly vulnerable to these conditions, leading to concerns among local fishery services.

Evija Šmite, a representative from the State Environmental Service, noted that while most water bodies in Latvia are stable, there have been isolated incidents of fish suffocation reported, particularly in lakes located in Alūksne and Tukums. Historically, the last significant occurrence of widespread fish mortality was recorded five years ago, emphasizing the need for ongoing monitoring and management of these aquatic environments.

The current weather conditions, including prolonged low temperatures and extensive ice cover, exacerbate the situation by preventing light penetration and further reducing oxygen levels in lakes. As the climate changes, warmer temperatures are anticipated to alter these patterns, potentially affecting fish populations and local ecosystems, which is why proactive measures from lake managers are pressing.