Which are the tiny fish that are very colorful?

[dread head]

Hey everyone, please forgive me for asking, but I am not really good at this. What kind of fish are very tiny and have bright blue and yellow? Thanks for reading.

 

[Daniel]

my favorite is a guppy called tequila sunrise it is yellow with a red fan-like pattern on its tailfin

 

[righteousjohnson]

Neon Tetras. (Freshwater) If they are schooling.

Male Guppies. (Freshwater) If they swim separately.