Not sure if this is the right place to post this... Sorry if it's not.

A month ago we set up our tank. It is 61 x 36 x 31 cm.
To date we have:
3 Bala Sharks,
1 Angelfish,
3 Mickey Mouse Platys,
3 Guppies,
1 Female Fighter,
1 Albino Catfish
6 Neon Tetras.

I have little faith in the advice the pet store gave me so anything you can tell me/advise me on would be much appreciated.
Does that see mlike too many fish?
Or maybe some species are not suitable together?

We're having no problems really, no casualties, all seem happy.
The only issue we have is that one of the guppies is a bit of a bully towards the platies.

Thanks in advance!