Extremely rare fish spotted in the Biesbosch

Forest ranger Thomas van der Es had to rub his eyes when he saw a gigantic fish splashing around in shallow water in the Biesbosch nature reserve. It turned out to be the rare sea lamprey.
Biesbosch - Zeeprik in het water
Photo: Thomas van der Es
Zeeprik in het water
Photo: Thomas van der Es

He had never seen this animal in the waters of the Biesbosch before. Thomas van der Es, a forest ranger who works at NLDelta National Park, found the unusual fish while on an evening hike: ‘At first I wondered whether it could be a European river lamprey, which would have made more sense in this area.’

Several experts employed by RAVON, a knowledge institute for reptiles, amphibians and fish, happened to be fishing nearby and confirmed his suspicions: it was indeed a sea lamprey. Thomas caught the slippery animal and released it in a creek nearby, so it can travel up the Meuse river via the Steurgat. It was an impressive if somewhat bizarre encounter.

Read the full news article here.

Want to go looking for rare animals in the Biesbosch yourself? The Biesbosch MuseumEiland is the perfect starting point for a variety of tours and nature encounters on the water or land.