kk_thomas05,
No worries here, we will all try to give the best advice possible but the advice you get may not be advice you want to hear... I say if you research saltwater, you will find that for first timers, it is recommended that you go no less than 30 gal. This is not to say that it cannot be done in a 2 gal, and yes you could have 1 clown fish in there however, I am not going to advise that for the first saltwater tank, you do this. Here is why.
You only have 2 gals of tank. In that two gal, you will be using at least 2 quarts of that space up by substrate and rock (or decoration). That leaves you with 1.5 gal of water. This means that build up of food and waste happens at a 20 times faster rate than in a 30 gal.
This means at least 1 quart of water be changed daily, and salinity kept watch constantly. Not to mention the ammonia and nitrite, nitrate levels.
It sounds easy enough until you have to do it. Then you will see. I have seen many beautiful 1, 2, 5, 7, and 10 gal setups that were full blown reefs. The one thing that they all have in common, is that the owners have been in this hobby for years, and took on a challenge to make it work and it is working for them. I guess I said all that to say this. Do not let anyone discourage you from attaining what you want. Just please be patient and read as much as you can before jumping into it. We (I) would like to see everyone succeed in this hobby and hopefully find something new that may help all of us in the future. Good luck with your venture and keep your chin up...