Today I went to take a look at my buddy Ianos. He's got black spots on his sides, and blackness on his gills. :C He's always had sort of dark gills, so I didn't notice at first-- but when I turned the light on over the tank and saw him flaring I saw ad color change in parts of them.
Housing
What size is your tank?
10 Gallons
What temperature is your tank?
78 degrees
Does your tank have a filter?
Yes
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?
The tank is divided, another male betta lives on the other half.
Food
What type of food do you feed your betta fish?
Hikaria Betta Biogold
How often do you feed your betta fish?
One pellet once a day
Maintenance
How often do you perform a water change?
Still trying to figure that out for a filtered ten gallon. They both went in three days ago with clean water so. :/
What percentage of the water do you change when you perform a water change?
Dunno yet for the 10 gallon.
What type of additives do you add to the water when you perform a water change?
Tetra Bettasafe is added to my tap water.
Water Parameters:
Have you tested your water? If so, what are the following parameters?
No
Symptoms and Treatment
How has your betta fish's appearance changed?
Blackness on actual gills (previously very dark reddish color), small black spots on body, behind gill area.
How has your betta fish's behavior changed?
Nothing unexpected I guess? He's been flaring a lot at his new neighbor-- and the other betta's been flaring back. They both try to attack eachother through the divider-- but the other fish still seems fine.
When did you start noticing the symptoms?
Last night.
Have you started treating your fish? If so, how?
No.
Does your fish have any history of being ill?
Not that I know of, but he was from a pet store.
How old is your fish (approximately)?
No idea. :C
I'd like to add that he's in the side of the tank with the filter-- and though there's a baffle on it, the water comes down pretty strong on the sides. I've noticed when he gets into it with his neighbor, he swims into the current and gets pushed down to the ground/tumbled around. I put plastic plants by the divider, to try to keep them from seeing eachother so much, but I think he's been hitting them. He's got a small tear in his tail fin too and I'm worried.