I was thinking about getting some boesemani rainbow fish for my 55 gal
but I wasn't sure how many I should get. I've been trying to research online but i'm just reading suggestions of anywhere from 3 to 7. Also does anyone know the best female to male ratio? If it helps, I already have a few semi aggressive fish - 9 tiger barbs, 2 kribensis, and 1 rainbow shark. Thanks!