Can a couple of cichlids go in a 20 gal tank?

I was looking them up and there are a couple that seem really cool, but i want to make sure first

 

ok, i have a 20 gal tall, pics of my current setup can be seen in the saltwater photo section. It's currently a salt water tank but my puffer just passed so i will be cleaning it out and transforming it back to a freshwater tank. So i'm hoping to get new fish in a couple of weeks. What other brightly colored fish that stay rather small can go in a 20 gall tank?

And for me it doesn't matter what kind, so long their brightly colored, not to expensive, and can live comfortably in my current tank setup, sincei cannot afford anymore decor

 

And i was also reasearching them a bit, and it looks like the only kind of chichlid i might be able to have are rams, which they are still pretty, but what else could survive with them in a 20 gal tall?

 

ok, i think i've decided that i'll get a german blue ram, and would threadfin rainbows go well with the ram(s)?

 

Ok, what other brightly colored cichlid should i try, that stays on the smaller size, and i would like something that can get along with another fish, it was hard to have just 1 fish in a 20 gal. So i want something that could at least get along with other fish

 

ok, if not cichlids, do you think threadfin rainbows would work, i really like them also

 

for the threadfin rainbows when i googled their images, i noticed that two kinds showed up. <a class="postlink" href="http://www.aquarticles.com/images/Fish%20Stores%20Canada/Finomenal/p-12%20Discus.jpg" onclick="window.open(this.href);return false;">http://www.aquarticles.com/images/Fish% ... Discus.jpg</a> and <a class="postlink" href="http://www.victoria-adventure.org/more_than_links_images/dave_wilson/iriatherina_werneri1.jpg" onclick="window.open(this.href);return false;">http://www.victoria-adventure.org/more_ ... rneri1.jpg</a> so i'm a little confused, i like them both though

 

ok i'm not sure if i like them enough, i'm wanting BRIGHT fish that can somewhat get along with each other even if i can get like 4 brightly colored fish and have a school of neon tetras or something :/ i still have 3 weeks until i decide on which fish i want so i guess ill just keep researching more

 

what about the rusty chichlid <a class="postlink" href="http://www.minoltaphotos.com/fish2/Rusty%20Cichlid.jpg" onclick="window.open(this.href);return false;">http://www.minoltaphotos.com/fish2/Rusty%20Cichlid.jpg</a>

 

hmmmmmmm this sucks, its really hard to find bright colored fish that i want to fit in my 20 g, i wish i had enough money/space to set up a bigger tank