Danube delta gudgeon

Rarity: Common

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At a glance

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What Wikipedia says

The Danube delta gudgeon (Romanogobio antipai) is a species of freshwater ray-finned fish belonging to the family Gobionidae, the gudgeons. This fish is endemic to the lower Danube in Bulgaria, Romania and Ukraine.

Excerpt from the Wikipedia article “Danube delta gudgeon”, under the CC BY-SA 4.0 license. Read the article on Wikipedia

Image: Danvasilis, CC BY-SA 3.0, via Wikimedia Commons.