Advice on choose livestock.

[bokhesh]

Hello, Everyone
Im having trouble deciding what fish to add to my 30 gallon tank 36”w x 11”d. So far I have a pair of clownfish, pistol shrimp and some hermit crabs. I would love to add a yellow watchman goby, a starfish and a midas blenny. However I feel like I need more movement in the tank so I was thinking maybe a hectors goby, and a possum wrasse or a cardinal. I researched and it said that the hectors goby and cardinal could be aggressive towards eachother.
I’m looking at about 6-7 fish or less, if that is too much for the tank size.
I am open to any suggestions but I would really like to keep the 3 fish mentioned first.

Side note: what are some nice corals to add to sandbed.

Tank filtration:
Skimmer, uv sterilizer, innovative marine gadget, media basket, filtor sock.

Thanks in advance, looking forward to your ideas and advice.

 

[damsels are not mean]

Springer's damsel. It'll move and be pretty charismatic. Completely peaceful and also blue to contrast your yellow/orange heavy lineup. For sand corals I'd look for big fleshy LPS corals. Lobo, scoly, fungia, etc. These corals tend to settle on the bottom in the wild anyways.

 

[bokhesh]

Just searched up the damsel it looks gorgeous might have to buy it now!! Scollys have been on my list for awhile now this is a sign haha.
Thank you!!!

 

[fishywishy]

All those fish you mentioned can work. You can have 6-7 fish as long as your filtration can handle it. It looks like it should but add fish slowly just in case.

If you want a fish with a lot of movement I would go for a dwarf angel. Maybe a flameback or Pygmy.