shoaling........

Hi just wondered what people's thought where on corie groups. I will be upgrading my tank size to up my two bronze to a group of six. And I'm not sure what will be better for the fish and have a more visual impact in the tank - 6 bronze or a mix of 3 bronze and 3 others. Thanks ?

not sure where to post this...in the tetra section or in corydoras....but HAD to share.....PLEASE MUTE YOUR SOUND< KIDS CRYING IS NOT ENTERTAINMENT!! sorry