Evolutiv junge europäische Höhlenfische
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A population of loaches (Barbatula spec.) from the Aach Cave in Germany represents the first cave fish in Europe and the northernmost cave fish worldwide. Reasons for the evolution of this fish may include that its cave is fed by surface water that percolates from the upper Danube and enhances the habitat. Cave Barbatula are evolutionarily young and may serve to generalize findings about the well-studied Mexican cave tetra (Astyanax mexicanus).
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