I need help what fishes for a 54 liter aquarium?!?!?

Hi!

So I'm going to buy some fish

I used to keep neon tetras and guppies.

I have a 60x30x30 aquarium, which is about 54 liters

I would really like to have Hyphessobrycon bentosi

From what I've read, they can be combined with panda catfish (panda corydoras)

I would also like to have miniature shrimp.

Now the question is:

How many of a given species should I buy so that they can safely live in a 54 liter aquarium?

And is it even possible to combine them all? (*￣3￣)╭