Indefinite Ban on Sturgeon Fishing

Black Sea biodiversity protection efforts continue to advance as regional organisations, researchers, and conservation groups respond to both long-term ecological threats and newly emerging environmental risks across the region.

One of the most significant developments in 2026 is Bulgaria’s introduction of the country’s first indefinite ban on sturgeon fishing in the Danube River and the Black Sea. The measure, which entered into force on 1 January 2026, protects critically endangered species including beluga, Russian sturgeon, stellate sturgeon, and sterlet.

The decision marks an important milestone for marine conservation efforts in Bulgaria and the wider Black Sea Basin. According to environmental institutions and conservation partners, more than 190 sturgeons have already been successfully rescued and released by fishermen during the past two years through coordinated conservation activities and awareness efforts.

Sturgeons remain among the oldest and most threatened fish species in Europe. Habitat fragmentation, illegal fishing, pollution, and ecosystem degradation continue placing severe pressure on their populations throughout the Danube and Black Sea regions. Long-term protection measures and regional cooperation remain essential for species recovery.

Alongside sturgeon conservation, marine biodiversity monitoring organisations are increasingly focusing on broader ecosystem risks emerging across the Black Sea.

Recent environmental observations include the detection of invasive marine species such as the blue crab (Callinectes sapidus) near Primorsko and the flatback mud crab (Eurypanopeus depressus) in the Azov Sea. Researchers believe ballast water transport and changing environmental conditions contribute to the spread of invasive species across regional marine ecosystems.

Marine mammal monitoring also remains a priority. Reports from parts of the Russian Black Sea coastline indicated more than 130 cetacean deaths since March 2026, raising additional concerns among environmental experts and regional research organisations. At the same time, Bulgarian authorities recently published updated practical guidance for fishermen regarding the safe release of accidentally captured dolphins.

Scientific developments continue providing encouraging signs for regional biodiversity as well. Researchers from the Institute of Oceanology at the Bulgarian Academy of Sciences recently reported the return of the rare mollusc species Flexopecten glaber near Sozopol after decades of absence, suggesting gradual ecological improvements in certain coastal areas.

Through regional cooperation initiatives and digital monitoring activities, SturNet and the Protection of Biodiversity in Bulgaria Foundation continue supporting biodiversity conservation, environmental awareness, scientific collaboration, and marine ecosystem protection across the Black Sea Basin.

The protection of Black Sea biodiversity increasingly depends on coordinated international action, long-term scientific monitoring, and stronger public awareness surrounding marine conservation challenges affecting the region today.

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SturNet

Protection of Biodiversity in Bulgaria Foundation

Related articles:

WWF Sturgeon Conservation Initiative

Bulgaria Introduces Indefinite Ban on Sturgeon Fishing