What Fish For Aquarium Size?

[dipsydoodlenoodle]

I'm looking to buy either a 4.5 gallon or 7 gallon tank (US gallons).

But I was wondering what would do well in those tanks?

The only thing I have thought about so far is a betta; I have posted on the forum here and asked about the betta, but what other things could I put in there? (for both tank sizes).

I have newts and shrimp so neither of those suggestions please

 

[Wills]

There is a post in the catfish - other section with dwarf moth catfish in there and it is stunning! I am so tempted to strip down my 20g SW and do a mini asian biotope in there but I fear my girlfriend will kill me with her bare hands.....

But yeah just think tiny, tons of tiny danios that basically look like really colourful fry. Loads of pygmy rasbora around like chilli, rasbora etc dwarf catfish, ottos, shrimp, anything with pygmy is a good start

 

[dipsydoodlenoodle]

I am thinking tiny don't worry .

I've never had tropical fish before (I've had and still got coldwater though); so I'd like something small with colour .