While I like the Borneo Kuhlis colors, I have no idea if they can be kept as 1 of each color in a formation and you have to keep them in 6-10 to be happy.Here we are!!!
http/www.fishforums.net/index.php?/topic/386784-different-species-of-kuhli-loach/page__fromsearch__1
And not many colors that I like. The Borneo and Pangio cuneovirgata would be the only ones I like the colors of from the list.