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The shrimp is a cocktail shrimp from your local grocery store. They are used, in place of the live fish, to start your cycle. Right now, those poor fish are in a sewage pit. I suggest you take them back to the store and buy a raw, unspiced cocktail shrimp. Drop it in the tank. The rotting shrimp will produce ammonia, which will produce nitrites to nitrates. Once all those levels spike and then balance out to 0, your cycle will be over. Then you can start adding live stock. Take a look around on some websites and see what you like. Once you have an idea of what you would like to add to your tank, ask here, if it will be compatible with your current setup.