From the article:
The fish known as Betta comes in a variety of forms and colors. Although there are 28 known species, the best known is the Betta splendens, or Siamese Fighting Fish. They are great little pets but many people are confused by the different names describing them.
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You had never heard of a Beta fish? These fish are sold for about $3.00 in every pet-store, walmart, and mall kisok from here to Bangladesh. When it comes to commonality amoung pet fish the beta ranks a close 2nd just after the gold fish.....