What size is your tank? 2.5 Gallons
What temperature is your tank? N/A
Does your tank have a filter? Yes
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? Pellet food
How often do you feed your betta fish? Usually four pellets a day, but Iíve started giving him just 2 a day when I noticed the lump.
How often do you perform a water change? Every 2 weeks
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? None
Have you tested your water? If so, what are the following parameters?
Symptoms and Treatment
How has your betta fish's appearance changed? A little bit of fin rot, but most noticeably a small lump on his right side at about the middle of his body.
How has your betta fish's behavior changed? Nope. Heís still active, responsive, still eating, still flaring, still jumping, making bubble nests, etc.
When did you start noticing the symptoms? I noticed the lump 2 days ago.
Have you started treating your fish? If so, how? I have changed the water and have him on Bettafix.
Does your fish have any history of being ill? Only with fin rot.
How old is your fish (approximately)? Iíve had him for over a year now.
Iíve had my betta fish, Thunder, for over a year now and the only illness heís really had is fin rot. Usually, Iím on top of cleaning out his tank and do it every 2 weeks or so, but this time circumstances prevented me from cleaning out his tank as usual. He was in the same water for nearly 4 weeks, and his tank had a lot of green algae in it. At that time I noticed a bit of fin rot, but I hadnít noticed anything else. The day my water was de-chlorinating (about 4 days ago) I finally noticed a small lump on his right side. Itís located about the middle of his body and I tried my best to take pictures of it, but Thunder got agitated with the camera and would swim away after a few shots. The lump itself is circled in red. It has me really concerned.
I did some research, and Iím afraid that itís the beginning of dropsy, but as you can see his scales arenít raised or anything. Heís actually not behaving any different. I put him in clean water now, and heís still alert, heís flaring, heís jumping, he responds to me when I walk into the room, heís still got a big appetite, and he even made a bubblenest.
I spoke with someone at Pet Supermarket and she told me that she thinks heís been overfed. I usually give him four pellets a day, but she said that betta fish sometimes eat algae and that could be the cause of his lump. Iím not too sure if I believe that. Iíve never heard of it. Iíve started to give him Bettafix (this is now the 3rd day on it) and Iím going to be making sure his water is clean.
Does anyone have any idea what could have caused the lump or what it actually is? Iím pretty sure it was caused by the dirty water, but Iím not sure what it is or how to get it to go away. Iíve also reduced his meals to 2 pellets a day now just in case he has been overfed.