What size is your tank? 1 gallon- temporary housing while I work on dividing a 10 gallon
What temperature is your tank? 75F
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? None
What type of food do you feed your betta fish? Top Fin pellet, flakes, occasional vegetable material
How often do you feed your betta fish? twice a day
How often do you perform a water change? Every day
What percentage of the water do you change when you perform a water change? Currently 100%
What type of additives do you add to the water when you perform a water change? Prime water conditioner, currently also adding salt (3 days into treatment)
Have you tested your water? If so, what are the following parameters?
Symptoms and Treatment
How has your betta fish's appearance changed? Fins have gone from missing pieces at the edge to missing whole chunks down to the base of the fin
How has your betta fish's behavior changed? No change
When did you start noticing the symptoms? Over a month ago
Have you started treating your fish? If so, how? Salt treatment, more frequent water changes
Does your fish have any history of being ill? No
How old is your fish (approximately)? around 8 months
This damage started out small, with a small section that looked like a shrimp bite several months ago. It appeared to be healing, but then little bits of his fins started looking tattered at the edges. I initially thought he might be biting his fins because he is a rather angry little guy, but then just in the past 2 weeks the damage escalated drastically. Last night part of his dorsal fin just vanished down to the base. There are no discolorations, no indications that he's sick other than his fins just missing. It's reached the point now that I'm very worried, and I fear his fin will not grow back. I don't know if starting the salt treatment triggered the radical loss and if I should stop it immediately. He is such a beautiful fish that this makes me quite sad. I don't want to move him to the divided tank with my other betta until I find out what is wrong with him, in case it is somehow contagious.
Any dark coloration on the tips is simply shadow from the light I used to photograph with. I've not seen any actual black or bloody tips. He does look a bit bloated in these pictures, but that's not typical for him.