09/23/2026
😳🐟 When an normally active betta suddenly starts spending most of his time on the bottom, I’d pay attention—especially when the behavior improves after a water change and then returns.
One reassuring thing: that strange “ball” in the photo is actually a snail, not something that came from the betta. 🐌 The pale spot on his head and darker area on the fins are harder to diagnose from this photo alone, and I wouldn’t medicate based only on those marks.
I’d start by testing ammonia, nitrite, nitrate, pH, and temperature immediately. Ammonia and nitrite should both be 0 ppm, and make sure the heater is maintaining a stable betta-appropriate temperature around 78–80°F. Also watch for rapid breathing, clamped fins, bloating, loss of appetite, white/fuzzy growth, or worsening discoloration.
🔍 The fact that he perked up after the previous water change makes checking water quality the first priority. If you can share the exact test results and tank temperature, that would narrow things down considerably.