Did you know that the Siamese fighting fish comes from Siam? Siam is the old name for Thailand. As such, they are tropical fish and the water in which they are kept should reflect that (i.e. 24-28 degrees celsius). Today, the fish is bred in captivity virtually anywhere in the world, provided you can maintain such tropical water conditions for them. The majority of those you purchase from the local fish shop would be from south-east Asia.
On another note, if your Betta is looking a bit lethargic or off its feed, it may be because the water is much too cold for it. Obtain advice from your fish veterinarian or local fish shop about giving them a good healthy environment.
