What fish in 20g

[Clownydowntown]

I currently have a yellow watchman goby and 2 clownfish. How many more fish can I add and what fish do you guys recommend?

 

[Rtaylor]

None, that’s full for a 20 gallon. You can add some inverts, but 20 gallons is on the small side for clowns. Clowns get aggressive as they mature.

 

[blecki]

Agree, you're at the max. You could do two much smaller fish if you rehomed the goby - for example in my 25 gallon nano tank I've got two clowns, a neon dottyback, and a six line wrasse. It works because the dottyback and wrasse are both very small fish and all four of them are jerks. A meek fish in that small a space with the clowns will get torn up.

 

[Clownydowntown]

None, that’s full for a 20 gallon. You can add some inverts, but 20 gallons is on the small side for clowns. Clowns get aggressive as they mature.

Both of my clowns are over 2 years old so I think they’re already matured. And they’ve been really peaceful with the yellow watchman goby

 

[eislekel]

I have 2 clownfish and 1 mandarin dragonet.
For the mandarin, it's quite a small tank due to the pod population but I have no issue right now. Mandarin got used to eat frozen brine shrimp.