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Questions related from Jeroen Van Wichelen
In September this year, I noticed an orange/green coloured scum layer in a slow-running river (see pictures) close to my hometown (Deinze, Belgium) containing green and orange clusters, as can be...
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This spring we encountered some striking greenish colored glass eels (see pictures in attach). So far, this pigmentation is restricted to the neck region (just behind the head) and a lateral area...
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