r/Goldfish

Just a lil video of my fish swimming around the port hole its so fun to watch them zoom past!

I have extra Amazon frogbit and water lettuce available and would love to share it with fellow aquarium hobbyists!

Price: FREE plants
Shipping: $15 USPS Flat Rate anywhere in the US

Plants will be packed carefully to give them the best chance of arriving in great condition.

Payment: PayPal
angelfire0695@gmail.com

If you’re interested, comment below and send me a PM or chat. I’ll update the post once everything has been claimed.

I’d much rather see these floating in someone’s fish tank than end up in the compost. Happy fishkeeping!

Hi all, never officially gotten an ID so wanted to ask. All three came from a Petsmart/Co feeder tank, I’m almost 100% sure, as a “prank” where they were dropped in a school toilet. Are all 4 years old, all about 5” long. All single tail.

I got a new fishy recently. Pearl is a 5 month old black moor🖤.

I had to go out of town for a week. I did a water change before leaving and left the dissolvable fish feeder in the tank and have an automatic dispenser giving a few pellets every 12 hours.

I am feeling anxious that something may be wrong with this setup and my fish is suffering while I’m gone.
I get back home tomorrow night. #nervous

I need help with some of my fishes, the power went out last night in our neighborhood and the water pump stopped working for a while. A bunch of our fishes died and we had to get them out of the water. We still have 2 that are alive and seem to be doing well but there are 3 that are floating around moving weakly. We are trying to see if it's possible to save our fishies. Some people recommended peas? Any information would be very valuable, if not now, then in the future

I noticed this while draining the water, im not sure if this was like this when full

I woke up this morning and found him curled around the filter, and immediately unstuck him…and he fell to the ground, still alive and moving his mouth. Not sure what to do, I let him be…until the other goldfish started picking at him, then I relocated him into a smaller tank so he could be…then he just sunk and showed no signs of movement.

I got them at a carnival, the one that died had numerous black spots which I thought is just recovery from ammonia poisoning. Just yesterday he seemed fine. I got them a 55 gallon tank, have been feeding them, using prime to dechloranate, and have been properly performing a fish in cycle, checking for ammonia every 24 hours (which none had shown up yet, I checked right after he died as well).

Is there anything I did wrong? What caused him to die?
I apologize I’m upset over losing a goldfish, I wanted them to live for years but he was around for just a week in my house.

my goldfish died on thursday, i do not believe he was in the tank for long as i took him out and buried him that day. That same day i noticed these worm looking things on the sponge filter. Ive been really sad about my fish passing but today im finally going to start working on my tank again. What the hell are these worms though, i thought detritus worms, but theyre honestly huge. How do u get rid of them 💔

update: 🤷‍♀️did a 90% water change, got rid of the driftwood, removed the sand, and lightly brushed off everything in the tank. rip my biofilter

Everytime I introduce a plant, my water quality is skewed or the plant dies. What am I doing wrong?

(First pic March 2026 vs second pic yesterday)

This is Kimchi! Not sure if they’re male or female. I got them as well at two others Nori and Miso back in March of this year. They’re currently in a 40 gallon breeder but now that they’re getting bigger I plan to upgrade them! The thing is Kimchi has been solid orange for months and seemingly over night they’ve started to turn white. Every day more white appears. Kimchi is acting normal and still eats like crazy. Water parameters are all where they should be. The tank does have some algae but that’s my bad for leaving the lights on a little too long. I know that goldfish can change color over time. But I thought it was more so black turning to the typical orange. Never heard of an orange goldfish turning white. My other goldfish Miso, for example had a black mustache that ended up turning orange. I just want to know if this is normal or if there is something to be concerned about? Thank you!

I have had these fish for around 10 years. They used to live outdoors in a pond but had to move indoors around 2020. The tank is 180L. Most recent move was at the beginning of May, since then it has been a bit of a nightmare.

They used to have a hang on filter which I upgraded to a Fluval 207 just after moving, in the last ~1 month I have had concerns of bad red streaking in their fins and flashing behaviour. I have tried treating with aquarium salts, tri-sulfa & paragone to which none of the treatments have helped with the flashing. The red streaking seems to be improving however.

Initially my water parameters were quite good, 0 ammonia, 0 nitrite and 10-20 nitrates. Since the final dosing of Paragone treatment (2 weeks ago) it seems my levels were all over the place. Ammonia between 0.5-1, 0 nitrate and 0 nitrite. I have been adding Seachem Prime and this week added a few days of Fritz 7 to try and get back to a normal cycle as I was worried all the medication used has destroyed any of my good bacteria in the tank.

You can see in the photos that in the last few days the large silver fish has some tearing of the tail fin which has only just happened. I have unsure if that fish has been going to live even the last few days as has been lethargic, some mornings just sitting at the bottom of the tank.

Open to any advice really I just feel sort of helpless at this point. I live in a small flat currently which is quite old, we have barely any power points and not really any additional space to have a Hospital or Isolation tank if required.

Here is the incredible glow-up of my two goldfish, Albino and Fausto!
They lived for years at my grandma's with really bad maintenance in a 30L (8 gal) tank. They were skinny, pale, and Fausto had severe ammonia burns. I couldn't let them die, so I started treating them and doing daily water changes to save their lives.
Once I saved enough money, I bought this temporary 200-liter (53 gal) patio pond with several live plants and a serious filter. Look at them now! They became so thick, active, and vibrant. Fausto got his deep orange back, while Albino naturally turned into a beautiful solid white.
My next step is saving up to upgrade them to a 500-liter (132 gal) dedicated pond for the rest of their lives. It's honestly mind-blowing to think about how they managed to survive that nightmare, but seeing how happy and healthy they are today is the most beautiful feeling ever.
Any tips or suggestions for the setup or the future upgrade are more than welcome!

Just got him for free off Nextdoor. This is a TEMPORARY tank I had fully cycled, while I get them a bigger set up. I accumulated them but the ammonia way really high in the water I got them. Do goldfish rest? Is he just tired from the transition and having clear tank rather than a bucket?