The Emerald Green Cory adds interest and beauty to the lower regions of your aquarium. This popular aquarium scavenger has an iridescent, emerald green body with pinkish underparts. In addition to an ornamental presence, the Emerald Green Cory Cat provides the valuable service of devouring uneaten food on the aquarium bottom.Also known as the Green Catfish or Emerald Brochis, the Emerald Green Cory Cat comes from the regions of South America in the Amazon River basin. It inhabits waters with high vegetation and neutral pH.