Poop is oddly colored and floats

[dorymomory]

Hrothgar is a pretty hardy fellow, but lately I've noticed that every once in a while his poop looks partly cream-colored, is a strange texture, and it floats at the top of the bowl for a few hours before sinking. When I noticed it, I did a 100% water change and took out his gravel so I could see his droppings, and have left it out every time I've done a water change since. It's not every time he poops that it looks like this, only every few days. Here's a picture:


Also, here's a picture of Hrothgar. As far as I can tell, he looks and acts normal, and I've been paying pretty close attention. It's hard to tell if he's pale, though, because of his light body.



Can anyone offer an idea of what this is a symptom of, or if it's even a problem? I'm worried about internal parasites.

Housing
What size is your tank? 1 gallon
What temperature is your tank? 80 farenheit
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? none

Food
What type of food do you feed your betta fish? New Life Spectrum Betta Formula
How often do you feed your betta fish? once a day, 5-6 pieces

Maintenance
How often do you perform a water change? Twice a week
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? API Stress Coat

Water Parameters:
Have you tested your water? If so, what are the following parameters? n/a

Ammonia:
Nitrite:
Nitrate:
pH:
Hardness:
Alkalinity:

Symptoms and Treatment
How has your betta fish's appearance changed? He looks a little pale, but it's hard to tell for sure because of his coloring.
How has your betta fish's behavior changed? no change that I can tell
When did you start noticing the symptoms? 1 week ago
Have you started treating your fish? If so, how? I'm thinking of aquarium salt, but I wanted some input before I started anything.
Does your fish have any history of being ill? Swim bladder disease a couple times, but he's always recovered quickly. Some tail biting, but his fins are growing back with no new damage.
How old is your fish (approximately)? 1 year-ish

[dorymomory]

bump...anyone have any ideas? I'd appreciate if someone could even just throw out an idea for treatment, because I'm completely clueless on this one.

[Luimeril]

i've seen that poop before. :I but, i honestly do NOT know what it means. 8I my betta at the time was ill, and looking VERY different than your boy, who looks TOTALLY healthy.

maybe it's just an odd poop. :I nothing to worry about.