Macrotocinclus affinis images

Otto catfish (Otocinclus affinis) from a private collection.

Otto catfish (Otocinclus affinis) from a private collection.

Joel is a popular keynote speaker with conservation, corporate, and civic groups.

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Joel is the founder of the Photo Ark, a groundbreaking effort to document every species in captivity before it’s too late.

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National Geographic Photographer and Speaker