If possible, I’d call the store and ask if they know the scientific name for that guy. The most common bumblebee gobies are brackish, or partial brackish, but there is a species that is total freshwater. Brackish ones won’t live as long in fresh.
your right mate it is a brackish water fish
I am going back tomorrow to the store. I will return it, I am trying to set up a community tank and reading about bumblebee goby might complicate things for me. I am new to this hobby.