I have had a brackish aquarium for 9 years a species aquarium with you guessed it-bumblebee gobies. I had my gobies for 7 years-the last ones past last november. I have restocked my aquarium with a new set of bumbles. I currently have 6 gobies.
Here's a few things that I have found. Tankmates-swordtails, mollies, platies, guppies, indian glassfish. I would avoid puffers. Netrite snails and shrimps i.e. cherry shrimp are fine too. I found that oscillating my water changes (brackish then fresh then brackish etc) seemed to be okay for them. If you want to have live plants go with crypt wendtii, jave ferns, crypt ciliata, water wisteria, hydro and java moss. Those plants can tolerate a brackish environment-just remember about the water changes. I have found them to be territorial but not overly aggressive towards each other. They will choose a spot and that is their little universe.
As far as food they LOVE live brine shrimp and will take frozen brine. Flakes and other foods are ignored. If you have other fish be advised that gobies don't move quickly so to make sure mine get fed I do a diversion. I add fish flakes at one side of the aquarium and the other end I drop the live brine shrimp in.
Ur lfs was housing puffers with bumbles? Yicks for the bumbles. They just lumped them together because they are brackish.
I hope this helps! =)
Here's a few things that I have found. Tankmates-swordtails, mollies, platies, guppies, indian glassfish. I would avoid puffers. Netrite snails and shrimps i.e. cherry shrimp are fine too. I found that oscillating my water changes (brackish then fresh then brackish etc) seemed to be okay for them. If you want to have live plants go with crypt wendtii, jave ferns, crypt ciliata, water wisteria, hydro and java moss. Those plants can tolerate a brackish environment-just remember about the water changes. I have found them to be territorial but not overly aggressive towards each other. They will choose a spot and that is their little universe.
As far as food they LOVE live brine shrimp and will take frozen brine. Flakes and other foods are ignored. If you have other fish be advised that gobies don't move quickly so to make sure mine get fed I do a diversion. I add fish flakes at one side of the aquarium and the other end I drop the live brine shrimp in.

Ur lfs was housing puffers with bumbles? Yicks for the bumbles. They just lumped them together because they are brackish.
I hope this helps! =)