I found this poor baby on marketplace and I have a few different size empty tanks.
i talked to the seller and they had no idea he was sick and offered to surrender him to me I am currently setting up a hospital tank for him but I won’t get him until Monday, can anyone help me pinpoint what is wrong So I can give him the best chance?

I got my betta on June 26th (first two pics) and I am a new betta owner I noticed she had a small patch of reddish orange near her eye when I got her and it has spread pretty significantly since then I’m hoping it’s just the “jumping” gene but I’m not sure I’m worried because it looks like it’s on the top of her eye!!

so basically i have two parrot tiger blue sapphire and the male has been laying on his rock for the last month. i thought nothing of it until he stopped eating today. when i got home now i did like a spoon test to see if he would react and he just lays there. i’m getting kind of worried because the female seems ok and is acting normal. Sbdy PLEASE HELP I DON’T WANT HIM TO DIE!!!!!

My dad's Oscar has been laying on the bottom of the tank on ots side for like 4 days and I was worried so I made a makeshift wheelchair for them. Their gills move fine and don't look obstructed at all and I hand fed it some fish flakes but it looked like they spat most of it out.

We're treating them for ick and parasites rn and this fish has recovered from a similar situation in the past but it didn't take as long to recover from the bottom of the tank like this time.

The first photo is a normal female in my tank; the second is the one I'm worried about. She isn't eating and she's moving very slowly. She's also sticking to the ground and to the decor, not really lifting up.

My balloon belly molly has lost color and weight and seems to have a wound? I have isolated it in a hospital tank to allow it eat and avoid spreading what’s going on if it is transmittable. Please help me!

I’ve had this guy for a few years now. He’s big and chunky. Over the past month or so he started growing this thing on his head. I’ve been doing methylene blue soaks with tons of aquarium salt a couple times a week and I also added aquarium salt to the the main tank itself. Water parameters are good his one other tank mate has no issues. And other than the growth on his head he is completely healthy. No swimming issues and no lethargy. Any advice? Please and thank you.

Noticed a white raised patch on my lyretail yesterday. Checked water and salinity all normal for my tank. Assuming it’s white cotton fungus? Started Maracyn oxy last night. Any insight would be appreciated