oh dear god...i don't know what's going on, i am REALLY hoping it's not parasites, but here's the sticky, and some side notes:
i didn't think of it until now, but a couple weeks ago i got him new live plants - banana plants from petsmart. they were in a fish-free tank in a sort of island, where it didn't look like they shared any fish water. i don't know though.
as a side note, hoshi seems much more energetic the last month or so than usual, he's even built 2 bubblenests in this time. both his firsts.
What size is your tank? 2.5 gallons
What temperature is your tank? a little less than 75
Does your tank have a filter? no
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? no
What type of food do you feed your betta fish? hikari gold & "color-enhancing" pellets
How often do you feed your betta fish? 2 or 3 times daily
How often do you perform a water change? 1 1/2 times weekly
What percentage of the water do you change when you perform a water change? one 100%, one 20-50%
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?
pH: i forget, i used to test it regularly, and it was always pretty high
Hardness: same as above
Symptoms and Treatment
How has your betta fish's appearance changed?
i'm not positive, but it looks like there might be a very slight lump, a oval/cigar shaped something underneath his scales on one side of his head. i try to look at it, and think i see nothing, but occasionally, i swear it's there. also, a little discoloration appeared on his lower fin a while ago, but it seems like he changes color every now and then. plus he's a major fin-biter, so sometimes I don't know if it's from that.
How has your betta fish's behavior changed?
for the last 2 days, hoshi has been doing something very odd. he'll swim down to the bottom of his tank, and kind of thrash around at the rocks. i've only seen him do it 3 times. and after he does it he sort of swims around bent, with his head sort of angled down
When did you start noticing the symptoms?
2 or 3 days ago
Have you started treating your fish? If so, how?
Does your fish have any history of being ill?
How old is your fish (approximately)?
i got him when he was probably a young adult 9 months ago.