I have 7 in one tank and 4 in another. They are standard bronze corys and I can't say enough good things about them. They have laid eggs several times and work NON-stop keeping the tank clean. I have no idea why I never kept these before, great fish.
Cories are great, active little fish and cute as a button too! One of my all time favorite fish without a doubt. I have them in every freshwater community tank I can get them in hehe