20g hex question

[daisyclover43]

Looking for a yellow fish to add a bright splash of color to my 20g hex. What can I put in there? Presently in the tank is a long nose hawkfish, a blue dot puffer, a purple pseudocromis, a nemo clown and a tomato clown. Tank has been in operation now a couple months. What yellow fish would work with these? (how about a blue fish??? Anything I can add for different color - since most things in my tank now are orange or red!).
Thanks!

 

[meowzer]

FIRST...I will say welcome to SWF....SECOND...I seriously do not think you need to add any other fish to this 20G...
Do you mean this Puffer?
Blue Spotted Puffer
(Canthigaster solandri)
QUICK STATS
Minimum Tank Size: 50 gallons
Care Level: Moderate
Temperament: Semi-aggressive
Reef Compatible: No
Water Conditions: 72-78° F, dKH 8-12, pH 8.1-8.4, sg 1.020-1.025
Max. Size: 5"
Color Form: Black, Tan, White
Diet: Omnivore
Compatibility: View Chart
Origin: Hawaii, Vanuatu
Family: Tetraodontidae
OR this Longnose HAWK
Longnose Hawkfish
(Oxycirrhites typus)
QUICK STATS
Minimum Tank Size: 30 gallons
Care Level: Easy
Temperament: Semi-aggressive
Reef Compatible: With Caution
Water Conditions: 72-78° F, dKH 8-12, pH 8.1-8.4, sg 1.020-1.025
Max. Size: 5"
Color Form: Red, White
Diet: Carnivore
Compatibility: View Chart
Origin: Central America, Fiji
Family: Cirrhitidae
Even the pseudochromis says minimum 30G tank......