A couple days ago, I got back from visiting my brother. I was gone for a week and left my bettas at home bc i remembered reading on this forum that it was ok to leave them for a week. A couple weeks before, i noticed that one of my bettas, Kai, had funky fins. it looked like light fin rot. so I did multiple water changes and started doing 30% everyday, instead of my usual 10% once a week. It ddn't get worse but it ddnt get better either.
The day after I got back, I noticed that Kai looks really skinny. His head looks huge compared to his body. None of the other bettas look that skinny.
His tankmate, Tikvah, is pretty new. Kai used to have his own tank. Tikvah is a lot bigger than him. Could he be this skinny because of stress? They flared at each other through the divider when they first got into the tank, but I haven't seen them flare at each other since.
What size is your tank? divided 10 gal
What temperature is your tank? mid 70s
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? divided with another male betta
What type of food do you feed your betta fish? nls pellets
How often do you feed your betta fish? 3 times a day. 2pellets each time
How often do you perform a water change? once a week
What percentage of the water do you change when you perform a water change? 10%
What type of additives do you add to the water when you perform a water change? dechlorinator
Have you tested your water? If so, what are the following parameters?
Symptoms and Treatment
How has your betta fish's appearance changed? very skinny, something going on with his fins.
How has your betta fish's behavior changed? no
When did you start noticing the symptoms? fins, I noticed 3 weeks ago. skinniness, yesterday
Have you started treating your fish? If so, how? clean water, a little bit more food
Does your fish have any history of being ill? no
How old is your fish (approximately)? i got him a couple months ago