Wilhelm Karl Hartwich (or Hartwig) Peters (April 22, 1815 in Koldenbüttel - April 20, 1883) was a German naturalist and explorer.
Wilhelm II, German Emperor | Wilhelm II | Wilhelm Reich | Gottfried Wilhelm Leibniz | Bernadette Peters | Roberta Peters | Georg Wilhelm Friedrich Hegel | Wilhelm Keitel | Tom Peters | Friedrich Wilhelm Joseph Schelling | Wilhelm Furtwängler | Robert Peters | Karl Wilhelm Friedrich Schlegel | Wilhelm Wundt | Wilhelm Sasnal | Wilhelm Kempff | Wilhelm Busch | Christian Heinrich Friedrich Peters | Wilhelm Westphal | Wilhelm von Knyphausen | Wilhelm von Bode | Wilhelm Steinitz | Wilhelm Schlenk | Wilhelm Heinrich Roscher | Wilhelm Gesenius | Wilhelm Canaris | St. Peters, Missouri | St. Peters | Prince Wilhelm of Hesse-Philippsthal-Barchfeld | Friedrich Wilhelm Freiherr von Bülow |
Guppies were first described in Venezuela as Poecilia reticulata by Wilhelm Peters in 1859 and as Lebistes poecilioides in Barbados by De Filippi in 1861.