New Species from the Mekong Delta

Odessa Barb
Scientists already knew the Odessa barb existed — after all, it's named after Odessa, Ukraine, where it has been sold as an aquarium fish for years — but the fish had never been seen in the wild until last year, when researchers discovered it in Vietnam's Greater Mekong region.

• Scientists Announce Trove of Fragile New Species in Mekong