I felt that my 125 was needing more fish. The first fish I put in the 125 was my Argentea. I kinda built the tank around this guy (my wife saw the Argentea at an LFS, and she loved it so much that she let me get a 125). It is a general rule of thumb that cichlids are less aggressive towards cichlids that look different. Because my Argentea looks quite different from pikes, I got a pike. I bought one as Strigata, but soon discovered it is Venezuela. I never payed attention to the Crenicichla forum until I got my Ven. It was not until then that I realized that Crenicichla were such cool fish, and there are so many more species of Crenicichla that I would love to own someday.