needle for seahorse?

[365seasons]

Just curious as where to find a small needle for a seahorse? Our male seahorse unfortunately has gas bubble sydrome, and we weren't sure where in Calgary we could find one?
As well, if there was any easier way to help relieve the air inside. We know that you can get antibiotics, but we think it'd be just as stressful to take the seahorse into the vets. Any suggestions?

Would you be able to stop at a vets and ask for one, or would a diabetic store sell you one? Pharmacy?

Thanks in advance.