new 30 gallon stock
 

so my tank is currently just cycling with live rock and sand.
i was wondering if i can just have a goby with a lionfish and some corals(later).

there was a cute baby lionfish as small as my fist in the store <3

Probally not a good idea to put a lion fish with a goby as the little fish could be dinner. If you get a lion fish you would have to put larger fish in and that's not advisable with a small 30g. Depending on the lionfish the volitan can grow up to the size of a basket ball with fins extended. I would do research on the fish before buying them...

Also lionfish have poisonous spines so if you intend on going in your tank lots with your hands approach with caution.

yeah i did some research and going to look around for a dwarf lionfish. of some sort