Does indeed appear to look very similar to the Crenicichla sp. 'British Guyana I'. Very nice pike for sure. One thing is certain, its definitely a Saxatilis pike, and appears to either be a variant of saxatilis or lepidota.
I'd call it a sax since it's blotch is missing that 9 o'clock to 12 o'clock positions that I've read mean it's a true saxatilis ... but I suck at sax types *l*
definitely female. im thinking cr. saxatilis. the humeral blotch looks alittle to low to be a british guyana I, but thats just from what the one picture of seen of that fish.
alos to much spanglingbetween the eye and humeral blotch to be a menezesi or frenata.