Most say double the length for width, 8x for length.
If I was to do a forever home for a pair I would go 8x3x3.
Single female could do a 125 alone, since she can get to 12
Single male since can get to 16in, I would do a min 8x2x2
All the vids I have seen of these fish say male's are hard on females, and need good hides only she can get into. Or if you can keep a harem, one male multi females to spread his aggression out.
If I was to do a forever home for a pair I would go 8x3x3.
Single female could do a 125 alone, since she can get to 12
Single male since can get to 16in, I would do a min 8x2x2
All the vids I have seen of these fish say male's are hard on females, and need good hides only she can get into. Or if you can keep a harem, one male multi females to spread his aggression out.