I have 2 female salvini's in my tank and they are absolutely fine. they stand upto the red devil and keep their own but none of my fish really fight, they just chase a bit. My salvinis play really well but my tank is way bigger than 75 (225) so i suppose in that size of a tank althought it COULD work, there is a pretty high chance that you would just end up with a blood bath.
as stated above, if breeding is your number one interest then tankmates only really cause problems. A big pair of GT's in a tank would be stunning and from what I see you have great potential in those guys.
Salvinis can be horrors and they can get on well long term but it depends on the fish and are you really willing to lose all your stock ?
Thank you so much for the advice


