The Siamese fighting fish is probably the most popular fish next to gold fish because of it's fascinating long flowing fins. They are often seen in little fish bowls in pet stores and you will notice that the male is very concerned about it's territory which is why keeping them in small tanks is not a good idea or they may end up fighting and can lead to injury or even death. You need a tank that's large enough for each and everyone to claim its own territory. Yes you can keep them in a bowl since they have a tipped mouth that enables them to grasp air from the water's surface but if you want your fish to be healthy and happy, you better put it in a tank with reasonable size.
Setting up the tank for Siamese fighting fish is not difficult, you just need a little know how and then you're ready to get started. You need a tank that can at least hold 5 gallons of water. The temperature should be 70 ° F – 85 ° F. For optimal health, keep the water heated to 78 °, pH should be 6-7.5 and water hardness should not exceed 20 ° dH. Do not use a filtration system that creates a lot of strong water movements as this can cause stress to your fish. As with any other water species, regular water changes should be performed to prevent any diseases and unnecessary stress. Keeping the tank clean helps lower the toxin level. You can decorate the aquarium with gravel, colored stones, silk plants (instead of plastic plants) and a small cave. Do not put pointy rocks or ornaments because they tear the fish's fins. Make sure you use a water conditioner before putting tap water in the tank because chloramines and chlorine can be harmful to your fish. Also, if your tank does not have any cover cover, fill only about 80% of the tank with water to avoid your fish from jumping.
Another thing you have to remember when caring for Siamese fighting fish is overcrowding, this is definitely a No-No! The less fish you have in your tank the better. Be careful when mixing them with other species especially those that tend to nip at fins. In addition to that, one male Betta is ideal because as we mentioned earlier, the male like to keep its territory. They are generally peaceful as long as you mix them with the right tank mates. They can be aggressive with other tropical fish with large fins like guppies and angelfish.