So yesterday this betta that I have had for a week now was zipping around the tank REALLY fast and being jumpy while swimming. I didn't see it as a big deal because he's finally stopped corner surfing. I still need to do his 100% water change but the water has been clear so I was trying to prolong it a little.
When I was laying in bed this morning and watching the tank, the fish seemed to be just chilling at the bottom, rushing up for air, then going back down to the bottom. Which I hear isn't good behavior. SO, I got out of bed and came over to the desk to check him out and he got a little more active, hanging out around the middle of the tank and all...
But he seems like he's feeling under the weather. He hasn't bee flaring all that much and he only moves to get air. He wasn't even moving that much when he was in the middle of the tank. I noticed one time he went up for air, after he got air he went back underwater and opened his mouth up really wide a second before going back to stationary position. Ive never seen him do this before.
No change in fin color, no parasites, no real injuries except for the scratch he had yesterday and it doesn't look any worse. The top of his head COULD be getting darker but that could just be me paranoid...
Just do a 100% water change and hope for the best? He's lived a week with me, I don't want him to die. D: His new heater and plants come in soon, dying is not an option!