Clown Killifish Stocking

[Joeman2000]

I am currently cycling a 10 gallon planted tank and was wondering how many clown killifish I can put in it. I can only find them in quantities of 10 on aquabid so is 10 overstocked? If so does anyone have any other sources for clown killifish that sells pairs or trios?

 

[techen]

As far as I can see
 
 



Minimum Tank Size: 20 gallons

Care Level: Easy

Temperament: Peaceful

Water Conditions: 73-79° F, KH 5-8, pH 6.0-7.5

Color Form: Black, Blue, Red, Yellow

Diet: Carnivore

Origin: Tank-Raised

Family: Aplocheilidae

 

[Joeman2000]

Does a 1 and a half inch fish really need 20 gallons?