Just imagine if a fish were a tourist. He would bring money with him and spend it; he would consume local products, paying for his hotel and full board. But no, a fish is not a tourist: “what nonsense are you talking?” asks my flatmate, whom I told about my imagination at breakfast. A freshwater fish doesn’t need a freshly-made bed, but rather the bed of a clean stream filled with plenty of water, providing different places in its biotope where it can hide from herons and other dangers, such as water snakes and anglers. It needs currents, peace and …
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