998 shares · 58 comments | These ocellate or peacock-eye stingrays (Potamotrygon motoro) are native to the freshwater rivers of South America. Though venomous, these fish—which biologist and photog Tim Wong describes as "curious and docile"—use their venomous barbs only for defense, and spend most of their time searching the river bottom for food and mates. Keen-eyed visitors may spot them in our Amazon flooded forest gallery.  | California Academy of Sciences | Facebook
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