Please help, Toki is suddenly dying.

[derpmeister]

Housing
What size is your tank? 10 gallons
What temperature is your tank? 78 degrees
Does your tank have a filter? Yes Aquaclear 20
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? None

Food
What type of food do you feed your betta fish? Omega One Betta pellets
How often do you feed your betta fish? Once every other day

Maintenance
How often do you perform a water change? Every other day
What percentage of the water do you change when you perform a water change? 20%
What type of additives do you add to the water when you perform a water change? Stress Coat

Water Parameters:
Have you tested your water? If so, what are the following parameters? I used a test strip, everything was withtin an acceptable range. EDIT: I just used a different strip and this one is telling me that the pH is low.

Symptoms and Treatment
How has your betta fish's appearance changed? Has turned pale and fins are clear. Fins are clamped and he is a little bloated.
How has your betta fish's behavior changed? Barely moving and has stuck himself on a floating plant to get air, twitching, heavy gill movement.
When did you start noticing the symptoms? 10 minutes ago.
Have you started treating your fish? If so, how? Did a 20% water change.
Does your fish have any history of being ill? Never.
How old is your fish (approximately)? 1 year.

Toki was completely normal this morning when I fed him. I normally feed one pellet every few hours with a maximum of 4 per day to help with digestion. This morning I accidentally dropped in two and he ate them unsoaked. I came back about an hour and a half later and now I think he is a dying but I haven't done anything differently except for what I just said. Please help, I'm at a loss. :(

[derpmeister]

UPDATE: He seems to have perked up slightly, he is not a ghostly white color and his fins have returned to red instead of greenish clear. I gave him a little blood worm and he ate it right up.

However, he is still twitching. It's not the kind of movement that comes with ich and he's not trying to scratch himself. Every couple of seconds he will have a little twitch on a different part of his body, like his fins, head, or gill flaps. He is starting to move a bit more but his fins are still clamped.

[DarkMoon17]

That's strange. Can you get a video of it?

In cold blooded animals, twitching can be a sign of a Thiamin deficiency... Try feeing him more often, 3 pellets per day. Is it possible to feed him frozen foods for at least one meal per day in addition to pellets?

Twitching could also mean there is something wrong with his water. Do you know if there are heavy metals in your water? You are using Stress Cost which should remove them but maybe you should add a touch more? It shouldn't do him any harm.

Had you performed a water changes shortly before he started showing symptoms? Are you sure you didn't forget to add Stress Coat?

Other possibilities are nerve system issues, internal parasites and stress from temperature changes.

[derpmeister]

I'll try to get a video but he mostly twitches when he has to move so I don't want to disturb him. It mostly looks like spasms. At one point he had a spasm that made him jump out of the water... it's very sad to watch. I'll definitely feed him more often since he still is eating.

I hadn't done a water change in probably 40+ hours before his symptoms and I'm sure I added the stress coat because I recall spilling some on myself. His temperature has always been steady. He is a little bloated but his poop isn't white or stringy so I don't know if it's internal parasites.

I'm going to try feeding him some more, thanks so much for your help. By the way, your art is very beautiful. :)