I have a betta that is less than a year old (I believe.. I purchased him in August). I have been feeding him pellets (4 in the morning, 3 at night, as per package instructions) and up until now he has been gobbling them up greedily and never had an issue with not finishing his food. A few days ago he only ate one pellet and now he'll bite one, spit it out and completely ignore his food. I tried switching to bloodworms and it was the same story. His water is regularly changed and looks clean and he hasn't had any change in environment.
On the bright side, other than his eating habits, his behavior has remained the same.. He doesn't hang out at the bottom or top of his tank for any irregular amount of time and still swims around actively.
I love my betta very much and this is really saddening. Any help at all would be greatly appreciated.
I found these questions on another thread, if it's relevant:
What size is your tank? About half a gallon I think.. It's a "dual tank" that I took the partition out of:
What temperature is your tank? Room temperature.
Does your tank have a filter? No.
Does your tank have an air stone or other type of aeration? It has gravel, that came with the tank...
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? Typically pellets. Tried bloodworms
How often do you feed your betta fish? Twice a day usually.
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? 90%, if not all.
What type of additives do you add to the water when you perform a water change? Top Fin Betta water conditioner
Have you tested your water? If so, what are the following parameters? .. I'm ashamed to say I'm not sure what this means.
Symptoms and Treatment
How has your betta fish's appearance changed? No.
How has your betta fish's behavior changed? No, except for not eating.
When did you start noticing the symptoms? A few days ago.
Have you started treating your fish? If so, how? I don't know how..
Does your fish have any history of being ill? No.
How old is your fish (approximately)? Less than a year, I'm guessing.
Thanks again in advance for any help or advice!