sudden onset

Hello I have had this awesome betta fish (Hyperion) since March of 2019. Not a lick of previous fish care since I was probably 5 and I took him home from my old catering job since they used bettas as center pieces and some guests even put multiple ones together to watch them fight. I know...

Ive had my betta for around 6 months. I bought him while i was away at college, due to space, he lived in a one gallon bowl with no filter or heater. While i was there i used city water to fill his tank but used water treatment drops meant for betas to fix the water. He was always active in his...

Hi - When I got home from work today, I noticed my fish Leo has a seriously tattered fin. I just changed ~75% of his water last night (he's in a 2.5 gallon tank), and he looked just fine... but now it's barely 24 hours later, and his fins are seriously damaged. Is it possible for fin rot to...