tropical fish disease

Hey y’all! I consider myself pretty knowledgeable when it comes to tank things and what I lack knowledge on, Google to the rescue. But this one has me all sorts of confused. I “adopted” this Molly 3 months ago. My local fish store has a “Kae Tank” that he puts fish in that he can’t sell for...

I wouldn't say I'm new to the hobby, but I  didn't know where else to post this.  So I've had my 20-gallon tank running continuously for approximately 10 years.  In those ten years, I've never had a problem with disease.  However, in the last month the weirdest thing has been happening.  Two of...

I have three new Angel fish (approx 5cm height) which after two weeks in the tank appear to be showing signs of fin rot. I have looked at the usual suspects - water quality, overfeeding, temperature, overcrowding and conclude it is probably stress-related, following their introduction into the...