Hello, I am totally new to having a fish in my home, sorry for my low experience in this matter, I beg your pardon :).
Any help would be greatly appreciated, should I just return the fish back and get another one ? or is there any mean of easy treatment ?
What size is your tank? 2 Liters
What temperature is your tank? No temp optimizer
Does your tank have a filter? No
Does your tank have an air stone or other type of aeration? No
Is your tank heated? No
What tank mates does your betta fish live with? Gourami, I bought the fighter yesterday and there are no signs of fights or anything at all.
What type of food do you feed your betta fish? Dry food
How often do you feed your betta fish? Haven't fed it yet, but that would be every other day
How often do you perform a water change? Every other day
What percentage of the water do you change when you perform a water change? 100%
What type of additives do you add to the water when you perform a water change? Anti-Chlorine crystals
Have you tested your water? If so, what are the following parameters? No.
Symptoms and Treatment
How has your betta fish's appearance changed? Its tail looks a bit rot in my opinion, there are two needle like spots on the tail at the mid of it which don't have any fins. But still not sure if that's because it hasn't opened its fins.
How has your betta fish's behavior changed? A little bit lazy.
When did you start noticing the symptoms? Since I bought it.
Have you started treating your fish? If so, how? Yes, I read somewhere I should put a tea spoon of salt, I did so. I have also put Theofinicol 250
Does your fish have any history of being ill? Just bought it.
How old is your fish (approximately)? Just bought it.
Pics of it: