Fish: nm (word coming from the old French peis, peas, from the Latin piscis, which also gave swimming pool).
A fish is an aquatic vertebrate animal, most often covered with scales, which breathes using gills and moves with fins. We currently know more than 30.000 species, which form a very heterogeneous group. Most live in seas and oceans, at more or less deep levels.
Les poissons d'eau douce (ou poissons dulcicoles) sont beaucoup moin...
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