Lennik (Eurotoday) – Rangers at Groenenberg Castle, Lennik, led by Tom Brichau, are removing invasive carp from the pond to protect toads, frogs, dragonflies, waterfowl, and bats, with similar work planned at Krommeviver, Gaasbeek Castle.
As VRT News reported, rangers at Groenenberg Castle in Lennik, in the province of Flemish Brabant, Belgium, are removing a large number of invasive carp from the castle pond today, Oct 30, 2025. They mentioned that the fish have grown in huge numbers over the years. They are taking up most of the food in the pond. Other animals that live in or near the water are now staying away.
The lack of food is upsetting the natural balance of the pond. To remove the carp, experts are using a method called electrofishing. A safe electric current is sent through the water. This stuns the fish and makes them float to the surface. Rangers then collect the fish with nets.
What is being done to remove invasive carp at Groenenberg pond in Lennik?
Once caught, the carp are placed in large water-filled containers for transport. They are released into other waterways, including the Dender River and the Brussels-Charleroi Canal. Some of the carp will also go to the ponds at Coloma Castle in Sint-Pieters-Leeuw. There, they will support local carp fishing.
“That’s good news for fishing enthusiasts, because after today, the stock will be well replenished,”
says ranger Tom Brichau.
“So far, we’ve mainly caught a lot of carp.”
According to officials, the main goal is to create better conditions for amphibians and insects. Toads and frogs will benefit directly. Dragonflies and other water insects will have more space and food. Waterfowl that feed near the pond will also benefit. Bats will gain because they feed on the insects that live around the pond.
“They’ll now be able to find and catch many more insects. This way, the pond will recover ecologically.”
The pond is completely emptied during the work. Removing this material prevents nutrient overload and helps restore the pond’s ecosystem. Rangers have used this method before. A similar operation is planned soon at the Krommeviver pond at Gaasbeek Castle to continue protecting local wildlife.
“We’ve already done this in one of the ponds at Gaasbeek Castle, right here,”
explains Brichau.
“It turned out to be very effective.”
The pond at Groenenberg Castle in Lennik was constructed in the late 1700s along with the castle’s landscaped gardens. Recently, ecologists have noticed a remarkable rise in non-native carp, which has occupied the pond and is feeding off the food naturally for wildlife. During the summer of 2024, the conservation authorities announced plans to drain and remove the invasive fish, as well as
Comments
20 responses to “Rangers Eliminate Invasive Carp from Groenenberg Pond in Lennik”
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A round of applause for our modern-day fish wranglers! Who knew saving toads and frogs involved so much shock therapy? ⚡🐟
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Seems like the carp are living the high life at Groenenberg, eh? Time to give the local frogs a fighting chance—who knew fish could be such greedy little bastards? 😂
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Brilliant! Nothing says “royal treatment” like a bunch of rangers electrocuting fish for a bit of ecological gymnastics. Hope the frogs throw a proper ball to celebrate their new dining options! 🎉🐸
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Just what we needed, a fishy eviction in Lennik! Who knew carp could throw such a ruckus in a fancy pond? 🐟💦
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Oh brilliant, nothing like a little electroshock therapy for the carp to give our amphibian friends a fighting chance! At this rate, we’ll have more frogs than fish in no time, and I bet the local dragonflies are throwing a rave. 🐸✨
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Oh, brilliant! Nothing like using a bit of electricity to sort out the pond’s food chain drama. Who knew fish could have such a knack for dining out on the local wildlife? 🐟⚡
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Oh, brilliant! Just what we needed – a fishy eviction party to make way for the frogs and bats. Who knew invasive carp were the real gatekeepers of our local pond’s elite wildlife? 🐟🎉
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So, we’re electrocuting fish now to save the frogs? Brilliant! Next, we’ll just zap the traffic jams away in Brussels, and we’ll really be onto something! 😏🐸
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Looks like the carp got too comfy in their little royal pond, eh? I suppose even fish need a proper eviction notice once in a while! 🐟⚡️
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Just what we needed, a fish exodus to make room for the local wildlife—who knew carp were such gatecrashers? 🎣 Seems like the only ones not invited to this ecological soirée were the poor fish themselves! 🐟💁♂️
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Looks like the carp have finally met their match—who knew a bit of electricity could be the secret weapon in this fishy saga? 🎣💡 Can’t wait for the next big “fishing tournament” at Coloma Castle; might as well charge admission! 😏
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Seems like the carp have taken the “all-you-can-eat buffet” a bit too literally, eh? 🐟 Just what every pond needs: a fishy population explosion!
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Looks like the carp had a little too much fun in Lennik’s pond, eh? Can’t wait to hear the toads throw a rave now that they can finally grab a bite without competition! 🐸🎉
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Quite the heroic endeavor, isn’t it? Just when you thought carp were merely for dinner, turns out they’re also the star of an ecological drama in Lennik. 🙄💦
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Another day, another carp-ocalypse at Groenenberg Pond, eh? Who knew fish could be such freeloaders—time to send them packing! 🐟💼
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Seems like the rangers have discovered the latest fishy trend — invasive carp are the new black! 🐟 Who knew eco-friendly fish removal could be the hottest ticket in town?
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Oh, brilliant! Because nothing screams “environmental genius” quite like shocking fish into submission for a bit of amphibian dinner theatre at Groenenberg! 🎣⚡
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Seems like the carp had their “all-you-can-eat” buffet at Groenenberg Pond, but now the rangers are throwing a proper shindig for the local wildlife instead! 🎣🐸 Who knew fish could be such party crashers? 😂
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Who knew carp could throw such a wild party at Groenenberg Pond! 🎉 Next thing you know, we’ll be sending out invites for a frog and dragonfly rave. 🐸✨
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Seems like the invasive carp are leaving the pond like it’s a bad party—who knew fish could be so picky about their guest list? 🐟💃
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