Nano fish with streamers

[i cant think]

So, I love the streamer look you find on many larger fish (Male tangs from the genus Naso, Male Genicanthus angelfish ect). Are there any that will work in a Nano, with some VERY small fish (0.5 inch long)? It’s a 20g tank (18”x15”x18”) and has:
- Pink streak wrasse
- Acicularis Clown Goby
- Yasha Goby
- Griessingers Goby
- Hectors Goby
- Linear Blenny

Now, I will eventually try go SPS heavy (If not only) depending on if I like the fluffy look of acropora species. Any fish and invert/coral safe fish that stay small and gain streamers as adults would be great to know! Aiming to try stay within the region of Indonesia though.

 

[Sharkbait19]

Do firefish count?
Not really a streamer but it has a nice long extended fin.
Lyretail or sailfin mollies have long fin extensions.