gill problems

Hi all I've woken up this morning to find my betta Zazu with red inflamed gills and am looking for some advice as to potential causes. I tested the water and found elevated nitrite (see pics) so I'm not sure if there's been an ammonia spike for some reason? Tank and filter have been...

Hello, TLDR: does my fish have gill flukes or did he just hurt himself? Should I treat for flukes regardless just in case? I need help identifying whether my new algae eater has gill flukes or if they sustained damage somehow? It was fine and looking/behaving normally this morning. Just now I...

Strange looking spotting appeared on his side. Please help me understand what it could be

Hello all, Been around fish for about the last 5 years. My Male betta seems to have some sort of tuma around its gill/head area. Unfortnatley i have been working away for the past 3 months and come back to very nasty sight. I tried my best in order to take a photo of it but bowed glass and a...