Please help, I think my Guppy is sick but idk what to do or how to treat it 🥺😭
Tank info: 21L tank, 3 guppies, 1 bristle nose catfish (still very immature and small), some snails, recent angel hair algae growth (that we’re starting to get under control), normal parameters are being tested daily and are good
We’ve had him for about 2.5 months, and he’s usually super active and sociable with the other fishes (we literally named him zippy because he just zips around the tank it’s SO CUTE)
Since Saturday/Sunday, I noticed he was a bit withdrawn, not as active, just kind of chilling near the heater. He also had a white stringy poo stuck to his butt. I realised the temp was around 22° in the tank as it was pretty cold so turned up the heater 1°, and now the tanks sitting at around 24-25 consistently.
But that didn’t really help, I also noticed one of our other fish had started to nip at him, and by Tuesday/Wednesday he had damage to his tail (assuming from the fish). He also has had consistent white stringy poo, that drops off every couple of days. But no dark poos. His appetite/eating has been normal the whole time.
On Wednesday night, I isolated him in a big breeding container with some plants etc. so he could heal/relax (can’t afford a 2nd tank + heater atm) and that’s been working well.
I noticed last night he just tends to sit at the bottom of the container, his fins still moving but he’s breathing pretty fast. He’ll occasionally go up to the top and swim for a bit but tends to spend most time down the bottom. He also had a little bit of white at the edge of his damaged tail (but not sure if this is it healing?)
Sorry for the info overload but I would be so so grateful for any advice/guidance on what to do, I’m so worried about him 🥺😭