Do I Need To Get All The Same Corys

[pippoodle]

I've got 3 pandas (got them first 2 weeks ago) 1 peppered and 1 habrosus (free from forum member)
I'm getting 10 more habrosus (on order) and 3 more pandas but i was just wondering wether i have to get more peppered or can i just get a different species to mix with them to make them happy , they already all play together
The habrosus are going in one tank so there will 6 pandas and 1 peppered in the other tank .

Any help appreciated

Sarah xxx

 

[Truck]

id recomend getting peppered as corys will thrive in groups of there own kind