Theyre small eartheaters. After a quick search on ol google im having a hard time finding anything about them being agressive. It all points to shy and mellow.
Dwarf pike is not a dwarf cichlid per se. Theyre talkin bout rams and smaller aequidens, nannacara, laetacara, bujurquina...stuff like that. Not crenicichla compressiceps or regani or the like.
Don't get dwarf pike cichlids, they will eat them, if they can't fully eat them, they will leave you with half of a floating fish in the tank. My experience with a dwarf pike cichlid and rummynose tetras.