red spots

Hi, I'm new to looking after fish and I've been looking after my friend's fish because they're gone for a while. I asked the owner for advice and they have no clue. The fish have red spots/marks on their skin, either on their mouth, tail, body or gills. Only some of the fish have red spots...

A few days ago, I found 2 of my 6 Pictus Catfish alive but belly up, breathing fast, and not being able to move. I removed them to a quarantine tank immediately and noticed a slight film on the rest of the pictus catfish. I removed 3 that I could find to the quarantine tank and did a water...

Opal is my betta I’ve had for about a year now. My fish's head has been turning red. About 2 weeks earlier, his tank had high ammonia and I had lowered his tank ammonia levels and it is safe now. In that time, he got gill burns and got cuts on his head. I am worried that he is not doing too well...

My female guppy has always been on the bigger side so I’m not sure if she’s pregnant right now or not. I got her 2 weeks ago and she’s been fine but today after a water change I noticed she has some red spots on her. There might also be some white fuzz near the spots? But it’s very subtle so I...