So sorry guys....
I haven't been on this website in a while. I got on here a few months ago but then school and nursing applications took over my time. I've been trying my best to help my betta Rocky, but I feel like I should have looked on here for advice sooner.
What size is your tank? 2.5 gallon mini bow
What temperature is your tank? 80-82
Does your tank have a filter?yes
Does your tank have an air stone or other type of aeration? no
Is your tank heated? yes
What tank mates does your betta fish live with? none...he did have a moss ball but I threw it away. He has a plant now. While I was treating him with Maracyn 2 I took the plant out of the tank.
What type of food do you feed your betta fish? Top fin pellets
How often do you feed your betta fish? every day...4-6 a day
How often do you perform a water change? usually once a week
What percentage of the water do you change when you perform a water change? usually full but sometimes half
What type of additives do you add to the water when you perform a water change? Prime
Have you tested your water? If so, what are the following parameters?
All I know is that my pH is around 8
Symptoms and Treatment
How has your betta fish's appearance changed? his tail got short relatively suddenly but it could have been over the course of a few days. I wasn't paying as much attention because of exams.
How has your betta fish's behavior changed? Not that I can tell
When did you start noticing the symptoms? 3 weeks ago
Have you started treating your fish? If so, how? Yes, I've done a round of Maracyn 2, used aquarium salt..just a few teaspoons in his tank and then I did not add any more....I have used Betta fix, Stress Coat, and Betta Revive...simultaneously. Right now, he has a few drops of Betta Revive in his tank (there was more before), stress coat, prime, betta fix, and when I changed his water 2 days ago I put some aquarium salt in. I don't know if all of these things together are bad but I don't think they are. I've just been trying my best to fight whatever this is.
Does your fish have any history of being ill? No
How old is your fish (approximately)? I got him in late september i think...and he was about 1.5 inches then not counting his tail. I don't think he's grown too much since but I haven't paid too much attention since I've been so busy.
Pics from Today, the U shaped chunk missing in the middle appeared virtually overnight. He also had a tiny hole closer to his body that healed up very quickly.
This picture is from a few weeks ago when I first noticed the problem:
And this was my beautiful fish around when I first got him:
At first, I thought he had bitten his tail off but then I started to think it was fin rot......I also don't see how he could have developed a tiny hole higher up in his tail if it was tail biting. It was kind of like a large pin prick in the tail that healed up. He is my first fish, so I'm not very experienced. I've also never seen any fin pieces around or seen any agressive behavior on his part. He does like to swim around a lot and a few weeks ago I did notice him flaring a lot.