Yes. Most anything placed in the water, other than chemicals intended for fish use, can overly stress a fish that can lead to death if not outright kill the fish.
I would definitely not do this. The chemicals from the paint can be extremely toxic to the fish and can possibly be fatal. If you want your betta to stay healthy, do not use paint in their tank!
It's not recommended to put coins in a Betta fish tank. Coins can leach harmful metals into the water, which can be toxic to fish. Additionally, coins can create sharp edges that may injure your Betta. Instead, consider using aquarium-safe decorations designed for fish tanks.
other Betta fish and the bigger fish.
Betta fish do not eat fish.
No betta fish are carnivores.
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
No. Betta fish will attack each other no matter the sex.
I believe you mean Betta fish. No, it should be fine. You can treat you Betta fish by giving them bloodworms!