They do okay in freshwater and brackish. They prefer brackish I believe. These guys were in freshwater at the LFS (cutest best mom and pop LFS with really knowledgeable owners/staff) so they are going to stay in freshwater here.
They aren’t too tricky/difficult. The most important thing is just making sure they are eating enough.
This little guy hitched a ride with them. Not sure what he is. Maybe a guppy fry. Guppies were in the next tank. Not sure how he would have made his way in with the gobies lol but here he is. His name is Junior.