20 gallon tank, how many fish?

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?

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Permalink Reply by Peter Hanson on September 6, 2011 at 2:14am

The density of fish per unit of space is a function of the amount of dissolved oxygen available. For static testing, the EPA and C.A. Fish and Game recommend 1 gm of fish per liter for vessels containing no supplemental aeration.

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Permalink Reply by Hmoobthor on September 6, 2011 at 5:56pm

of course..add more man!

grab a group of 5 cory of group them and get more red tetras too.

tetras don't produce much waste..

You still got alot of room left to play around with

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Permalink Reply by hossack8 on September 6, 2011 at 9:49pm

Alright thanks for the answers guys. I'm going to the fish store this weekend. I'm going to get 2 more cory cats. Then could I still add say 5 cardinal tetras?

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Permalink Reply by hossack8 on September 6, 2011 at 9:51pm

hmm won't let me edit for some reason. I noticed the jumbo neon tetras look similar but are an inch smaller then the cardinal tetras, would the neons be a better choice since they are smaller?