Random question. Can Koi eat these vegetables as well or only goldfish?
Oh yes. Koi and goldfish are rather closely related and have very similar physiology. I've feed my koi peas and zucchini on multiple occasions. They also seem to get a lot of the old fruit that is in my fridge like strawberries and blackberries. They also love orange slices. Really most fruits and veggies are good for koi. You have to be a little more careful with fancy goldfish tho as some vegetables (like broccoli) can cause gastrointestinal bloat.
So today I experienced the joys of tank cycling first hand... my ammonia SPIKED to 2.0 and now my little orange guy is missing the long fins on his tail :( I feel terrible.
I freaked and changed the water and cleaned the gravel and the water seems to be back to normal, but I'm worried about my orange guy. Did he damage his fins himself from stress from the ammonia, or does he have tail rot? Should I QT him? His fin looks normal except that it's missing the long and beautiful part. It does look a little red towards the base of his body, but his orange colors flow into his tail like that so I could be seeing just the color. I don't see any white anywhere.
The white guy looks perfectly healthy with no signs of any problems.
Cycling a tank will be hard on both you and the fish, but goldfish are usually hardy enough to stand it. The redness you are seeing on the little orange guy could just be stress. My goldfish will get a pinky tint to their nice long tails when they get stressed. Finrot will look the same as it does with betta and be a little red edge, deteriorating fins, and sometimes blood-red streaks going up the fins. I agree with Olympia; a picture would be great.
He looks pretty bad, my poor baby :( I just had to drive my brother down the street and I stopped at the vet supply store and picked up something called "Jungle Fish Health Fungus Eliminator" just in case this is bacterial.. if this isn't a good product just let me know.
Here are the pictures :( Looks like he's missing some scales in one of them...
The little white one seems to be following him everywhere and checking on him.
Fungal and bacterial are two different types of diseases.. If this is is fin rot, most fin rot is bacterial.. you may have picked up the wrong med :/ I wouldn't use it just yet though anyways.