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The Rio Negro Kleve e.V. cordially invites you to its 2nd Grenzlandausstellung/Borderland Exhibition! On the basis of some examples the association shows a small insight into the fascinating world

Fig. 1: A typical 'wood eater' in an alder wood cave (40 mm), Panaqolus tankei (L398) Caves as places to hide or spawn are an essential basis for the wellbeing of many groups of fish in aquaristics.

Guys, it's done! Together with the Association of Friends and Sponsors of the Grietherbusch Branch and Research Station of the Zoological Institute of the University of Cologne, we worked hard