Very handsome! I'm not good at IDs but I thought "candy canes" has a striped dorsal fin, at least the males...or is it pelvic fins? Are yours young? Maybe that shows up later?
I admit to having issues with the similar serpae tetras long ago. Semi-aggressive pretty little snots LOL. It may have been our number of them, tank size or tankmates, I don't remember anymore. Deep in my heart I know better but it's hard to get past that early experience. High body red tetras, even tiny embers, I may never be ready to keep again, scarred for life...?