Maybe a female idk I've never had that color morph and I've got 2 Senegal's in my cichlid 75. They get along with a trio of angels, a green severum, and a vieja regani. Along with some catfish and pleco. With bichirs if it fits in the mouth it is food though and will be eaten eventually.
I just looked up the Vieja Regani and they are beautiful fish. I kinda wish I had both morphs of the Acara lol but not sure how that would workout. I may try it and see. Luckily I don’t keep any small fish anymore due to my Festivum so no worries there. Woke up on several occasions and saw him eating the face of a Cardinal tetras.