Koi Angel (Pterophyllum scalare)
In mid-November I bought some fish for a 70 gallon take that we have in our breakfast room. I posted pictures of a Red Dwarf Gourami (Trichogaster lalius, Monday, November 23, 2015) and of a Green and Gold Cory Cat (Corydoras melanotaenia, Monday, November 30, 2015). Here is another fish that I got at the same time. This is a Koi Angel. There are three recognized species of freshwater angelfish. In the aquarium trade, Pterophyllum scalare is the most common and most of the varieties that are available are derived from that species. I think it’s pretty obvious where the common name for this variety comes from, having been bred to have the sort of markings usually associated with koi, ornamental varieties of the common carp (Cyprinus carpio).