The questions to ask a fish shop before getting a bumblebee goby should begin with salinity, because this tiny striped bottom-dweller sits at the centre of the hobby's longest-running argument — fresh water or brackish — and the shop's current keeping conditions matter more to your fish than either side of the debate. After that, territory and food decide whether a group of gobies thrives or dwindles.
Are your bumblebee gobies in fresh or brackish water, and at what level?
Bumblebee gobies in a shop may be sitting in hard freshwater or in brackish water with a measured specific gravity, so ask which, and if brackish, ask for the number. A goby acclimated to brackish conditions dropped straight into a soft freshwater tank — or the reverse — faces an osmotic adjustment on top of the stress of the move, and losses blamed on the species often trace back to exactly this mismatch. Ask the shop how it recommends you bridge the gap: matching its salinity at home and adjusting gradually is the careful route for brackish-kept fish. The shop's answer also reveals its sourcing, since different bumblebee goby species and collection localities lean toward different conditions, and a knowledgeable shop will say so rather than pretend the question is simple.
How many can share my tank's floor space?
Bumblebee gobies are small but fiercely territorial at ground level, each claiming a shell, cave, or rock crevice and defending it against the others, so ask how many the footprint of your tank can honestly support and what decor breaks up sight lines between territories. In a small tank that may mean a handful of gobies with a cave or shell apiece and spares besides; crowded gobies without enough shelters bicker constantly and the weakest stop feeding. Ask whether the shop sells suitable shells and small caves, and how its own display or sale tank is furnished — gobies perched visibly on decor, each in its own spot, show you the layout working. Numbers quoted without asking about your floor plan are a guess, not advice.
What will they eat, and what are they eating now?
Wild-caught bumblebee gobies in particular can be reluctant dry-food eaters, so ask what the shop's stock accepts — frozen bloodworm pieces, frozen daphnia, live foods — and whether any have learned to take crushed dry food. Ask for a feeding demonstration if the tank is due one; gobies that dart out from their perches and snap up food are feeding confidently, while fish that stay pressed to the glass ignoring offerings may be newly arrived or unwell. Plan your home menu around the shop's answer, because a goby that only takes frozen food commits you to a freezer routine from day one, and it is better to know that at the counter than at the first refused feeding.
What water and tankmates does the shop pair them with?
Bumblebee gobies do best in hard, alkaline water whatever side of the salinity debate you land on, so ask the sale tank's pH and hardness and compare them with your own. Tankmate advice matters just as much: gobies are slow, deliberate feeders that lose out to fast mid-water fish, and their long fins tempt nippers, so ask which companions the shop has kept with them successfully — peaceful top-dwellers and other small brackish-tolerant fish are the usual answer. A shop that warns you off housing gobies with vigorous community fish is thinking about month three, not just today's sale.
Tiny fish with strong opinions need a shop that keeps them deliberately, salinity and all, and the Pet Services Directory inside KinsLe helps you find local retailers who can answer the brackish question with a hydrometer reading instead of a shrug.