Hi! I was wondering if you could help me identify whatthis white bump.on my betta may be. I've had him for five months now, he's alone in a 20L acuarium with live plants. I started an anti-fungal treatment thinking it might be Ich, but it doesn't seem like it anymore. He also has some mild tearing on his fins. Before starting the treatment nitrite levels were just above 0.3. Here are some photos. Thanks!!