405 Tropical Fish at Westminster. You can call them first to confirm if they have some available. I normally call them before I go for the freshwater fish I want to buy so my drive is not wasted.
I think the dimension is 16" L x 12.5" W x 11" H.
There is a similar tank being sold at OC CL https://orangecounty.craigslist.org/for/d/10g-nano-reef-tank/6713538122.html. It comes with randall goby but i am not sure if it is still available.