Süßwasser-Stechfische (Familie Potamotrygonidae) gehören zu den faszinierendsten Aquarientieren. Bodenbewohner aus Südamerika, charakteristische Muster, elegante Fortbewegung, Stachel als Verteidigung. Anspruchsvoll in Haltung, aber exotische Ästhetik und pflegerischer Anspruch machen sie zu Premium-Aquarientieren.
Tipp: Informiere dich genau über Arten und Aquariengröße, bevor du startest.
2. Geschichte & Herkunft
Exklusiv in Südamerika, historisch Nahrung & Medizin, internationaler Handel seit 20. Jh., genehmigungspflichtig heute.
3. Biologie & Artenvielfalt
Pfauenaugen-Rochen (Potamotrygon motoro)
Feuerrochen (Potamotrygon henlei)
Scobina-Rochen (Potamotrygon scobina)
Netz-Rochen (Potamotrygon reticulatus)
3.1 Anatomie & Fortbewegung
Wellenbewegung der Brustflossen, Stachel mit Toxin, Seitenlinie & Elektrorezeptoren, gut entwickelte Augen.
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