Originally Posted by FishandPotterFreak
Could I be able to get the sleeper gold head goby and a firefish? Or just the goby? Thanks!
If you mean can you add 2 fish at once, it should be okay, but keep a daily close check on your water parameters for about a week and do PWCs if needed.
If you're asking more generally how many fish you can have in a 30g, I would say 5-6 small fish max, as long as you're good about doing regular PWCs and keeping up on maintenance. If you're not good about PWCs, I would do 4-5 small fish max.