New 20 gallon tank

[hossack]

Recently upgraded from a 10 to a 20 gallon fish tank. Im unsure of how many fish I can put in there. I know theres the 1 inch per gallon rule of thumb but I'd thought I'd ask people who know. Its been awhile since I've boughten fish so right now I only have 3.

Current fish:
2 Cory cats
1 red tetra of some sort(forget what its called exactly)

Adding:
1 Mystery Snail
4 or 5 red tetras(same type I already have)
5 zebra danios

Is this too many fish, not enough of certain kinds or could I add more?

 

[Thyra]

Although it is not a perfect tool, it is very helpful - AqAdvisor.com It will give you some idea of what you can do with your aquarium.

 

[KcMopar]

Ideally you are looking to have no more fish that will make no more then 20PPM nitrate in a week.

 

[lauraf]

You should be fine adding those fish to a 20g. I'd wait and make sure your tank is stable before adding more, but you do have room, IMO for a few more fish. You might want to consider adding a couple more cories, as they do like to school, and maybe a 'centrepiece fish', such as one dwarf gourami?

 

[hossack]

Alright, thanks for the advice. Im going to add some more cory cats. Im heading to the fish store this weekend so im going to have a look around and see whats theres. Its a fish specific store so im sure they can offer some good advice if I need it there. Might get a centerpiece fish or maybe 5 neon tetras instead.