hey guys im new to the forum and even having a saltwater tank in general. just got my first one. i was wondering what i can add to this, i don't have much room so i want my purchase to be worth it. i dont think i can fit much more fish in here but i could be wrong. i read somewhere you can have 1 inch of fish for each gallon. its a 30 gallon so i can have 30 1 inch fish? seems like a lot. here are some pics of what i got.
shrimp

bi colored angelfish

clown fish

don't know what he is

green starfish- coolest one in there

all the coral/plants are live, i also have some small snails and crabs in there. i first want to know if i were to get the "true" clownfish the real orange one, would it be ok with the clownfish in there now (from what i read seems like he is a "false"). What can i put in here (what would be safe) and how many more can i fit. any replies would be greatly appreciated! thanks