****really COLORFUL freshwater fish?*****

Obviously there are a lot of possibilities.

What popped into my head for that size tank would give it good variety of color would be:
10 various colored male guppies
1 blue gourami
3 kuhli loaches for the bottom

I guess my question would be are you going for variety of color (which this tank could do) or a "Wow those are cool *** fish factor?"
Yes i am looking for that WOW factor!

Thank you ALL for the rest of your comments. So the commen belief is guppies? I have some endler/guppy mutts now, but they arent that colorful at this point. i plan to use black gravel with some nice green (fake) plants and some java moss. I really was interested with Death Pony's post

"If you want to make the colors stand out more, follow the color wheel and use complimentary colors;

Red-Green
Blue-Orange
Yellow-Purple" Do you mean that these color combinations look best together???
Also i'd like to that NYCGuppy for the PM and Mainuh for the support!
 
Peacock Gudgeons and killifish are the most colorful, in my experience, for that size tank.
 
If you want to make the colors stand out more, follow the color wheel and use complimentary colors;

Red-Green
Blue-Orange
Yellow-Purple" Do you mean that these color combinations look best together???

Yes, these are complimentary colors. Red and green look good together; blue with orange; yellow with purple. Granted, you might like other combinations, but these set each other off nicely.

If you are okay with genetic modification (I am but many aren't), GloFish are super eye-catching and come in green, yellow, and pink. My husband really wants me to get them, but they like cooler water than any of my tanks. GloFish are genetically modified zebra danios, so they will like cooler temps than the average tropical tank.
 
Yes, those color combos will stand out the most when used together. What happens is the wants to focus on one color, but the complimentary color being on the opposite side of the color wheel diverts the eyes'/brain's focus from the original color to the complimentary.
Basically, the eye can only focus on one of those colors at a time, making the complimentary stand out even more. See, being an art major really does come in handy :D
 
here is a suggestion for you

get yourself some of those pretty dyed and tattooed fish they are pretty cool and come in a whole rainbow of colors that you dont see naturally occuring for their species. You could even get them so they look radioactive and glow in the dark























NOT, OK PUT DOWN THE FLAMETHROWERS PEOPLE, it was a joke !!!!

the gudgeon is a killer colorful and killi fish but make sure the top is covered they like to jump
 
it is such a hard decision!!! I have guppies already. I was thinking some mbunas.... i know of quite a few ppl keeping mbuna in a 29g. Can it be donee?
 
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