I did try try this once , few years back when I had my 6ft wall tank , I had 2 of each in there then all I had left after about 3 weeks was 2 blood/fire shrimp .
Was thinking of trying 1 of each this time ,
Last time might of been because of a territorial battle , thought I’d ask how others got on .
My blood shrimp were opposite, out all the time ,
I’ve got a picture in my photos of them if you want to see them .