Interesting short video about a rarely seen Cory that appears to have been selectively bred into a jet-black color form.  Mike Tuccinardi of Segrest Farms says the original wild species is not known with any certainty, but is likely Corydoras schultzei, also known as the Peru Gold Stripe Cory. (See Planet Catfish species profile.)

CREDITS
Fincasters | John Carlin | YouTube