George wrote: >Today I just purchase some A. cacatuoides Rio Ucayali at a local Fish auction. Are these just regular Apisto?< The Rio Ucayali is a pretty big river, almost 600 km long and together with the Rio Maranon form the Rio Amazonas. A. cacatuoides can be found throughout the Ucayali and as far up as the city of Iquitos and its surroundings. Pretty big range for an Apisto. Good luck with your new acquisition. Julio