It should always be 7.0!!
Betta fish are not terribly sensitive to pH. A pH between 5.5 and 8.5 would probably cause no problems.
check the PH in the water,
While the exact pH level for fish reproduction varies between species, a pH level below 6.0-6.5 reduces the ability of fish to reproduce.
If your betta fish is dying, you should immediately check the water quality in its tank and make sure the temperature and pH levels are suitable. Consider consulting a veterinarian who specializes in fish or a knowledgeable pet store employee for advice on how to best care for your betta fish. It's important to act quickly to try to save your fish's life.
No betta fish are carnivores.
other Betta fish and the bigger fish.
Betta fish do not eat fish.
Well, if you love your Betta fish, then it should live by itself. But if you add another Betta to your current Betta fish's tank, then they will start a fight because Betta Fish are Siamese fighting fish and if one Betta is in contact of another Betta, the possible reason would be a fight between them two.
A betta is a fish of the species Betta, especially Betta splendens, commonly known as the Siamese fighting fish.
yes
Sure we have betta fish in cuba
betta fish are specifically bred for fighting