Adding another clownfish

[SeaHorse_Fanatic]

I would recommend getting one a different size. If your first is quite large, then try introducing a small black one, so the larger clown can become the female & the small one the male. If they're the same size, it is more likely they will fight than pair off.

Unfortunately, in a small tank, you'll have to be much more careful to separate them if the fighting becomes too rough since there is no extra space to escape to for the newbie.

Anthony