Minuano for sure. They stay pretty small, very active, can be kept with anything semi aggressive and the males look real nice. Not a ton of color but a nice looking pike in my opinion.
Cr. proteus ... smaller sax-type pike. Found in white waters as high as pH 8.2 in the Rio Ucayali drainage. Female from Vinny Kutty's http://pikecichlid.com/ site: