I would love to add these to my stock, but they will be around 3-4 inches which is atleast a whole inch bigger than any thing else I have will this be an issue? I have a 135g with 1m 2f ps chewere, 1m 1f snow whites, 2m 1f afra cobue, 1 demasoni male which I will add some more as I would like atleast 10. I am also going to add tropheops chilumba around 7 and 1m 2f polits. Right now the snow white and the chewere rule the tank, will the zebra be too big for what I have? Has anyone keep these? Thanks for the info.