I posted something a few days ago ("Betta Rescue...Question") about a betta that belongs to another teacher at my school that I've been trying to help.
Well, it lived in about 2 cups of water in a tiny covered dish since August, and its water had NEVER been changed since then.
So I put him in a 1 gallon aquarium that the teacher bought (not great, but better than what he had). When I first put him in there, I noticed that his tail was funny looking on the end (kinda kinked on the ends) so I thought he might have some kind of fungus. I treated his water with Stress Coat before putting it in the aquarium and I added some salt to his aquarium. I have changed half of his water every day for a week and have kept salt in his aquarium. On Sunday he looked much better (brighter colors, swimming around, no change in his tail). I took him back to school yesterday so that she could take him home. Well, she didn't take him yesterday, so he was still in my classroom today for me to take care of. I didn't mind at all...I like him!
However, this afternoon when I looked at him, his tail no longer had kinks in the end of it, now it looks shredded!!
Does he have fin rot?? I have posted some pictures. I know they're not that great, but it's the best I could do. Before today, his tail was not shredded looking, but just had kinks at the end (which I read later that a build up of ammonia can cause) but today it looks horrible!!! What should I do?!?! I know he's not mine, but I feel like I should try to help him before she takes him home. Obviously she doesn't know the best ways to take care of him since she kept him in that tiny dish for so long. Any advice you have would be great. Oh, he does not have a heater
Let me just add that I read the directions for the tiny cup that she had the fish in. It was called tiny ecosystem or something...i don't remember the name. the directions made me furious! it said not to change the water but every 6 months (if you need to at all) and that the gravel would keep the water completely healthy for the fish. ?!?! grrr!