
Betta and Puffers are especially adept at this from my own experience but I've had many other fish recognize me. This is a behavior fishkeepers have understood for years but it's nice to have science quantify it for us I suppose. My puffer easily recognizes my face, comes to the glass, and also treats me differently. For example, if I put my finger on the glass, he looks at it, follows it, but...
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