White string hanging from goldfish's anus - Canada

[Angela 0]

this is magikarp, my red lionhead goldfish, he currently lives with 2 other red lionhead fish, a few days ago, he was extremely active and ended up stealing a lot of the other fishes food.

 

Ever since then, he has been hiding behind the decorations and moving a lit less, until today I noticed a white string coming from their anus, should I be worried? I've heard about feeding fish garlic or antibiotics.

-The tank is 10 gallons

- the other two fish are extremely lively and active

-I've had these fish for almost a week now

Edited August 16, 2017 by Angela
Clarity

[fantailfan1 26,742]

 and welcome!  Cute fish!

 

Please fill out the following form as completely as possible.  Also could you include another picture that shows the white string?  

Test Results for the Following: * Ammonia Level(Tank) * Nitrite Level(Tank) * Nitrate level(Tank) * Ammonia Level(Tap) * Nitrite Level(Tap) * Nitrate level(Tap) * Ph Level, Tank (If possible, KH, GH and chloramines) * Ph Level, Tap (If possible, KH, GH and chloramines) Other Required Info: * Brand of test-kit used and whether strips or drops? * Water temperature? * Tank size (how many gals.) and how long has it been running? * What is the name and "size of the filter"(s)? * How often do you change the water and how much?

* How many days ago was the last water change and how much did you change? * How many fish in the tank and their size? * What kind of water additives or conditioners? * What do you feed your fish and how often? * Any new fish added to the tank? * Any medications added to the tank? * List entire medication/treatment history for fish and tank.Please include salt, Prazi, PP, etc and the approximate time and duration of treatment. * Any unusual findings on the fish such as "grains of salt," bloody streaks, frayed fins or fungus? * Any unusual behavior like staying at the bottom, not eating, etc.?

[DawnMichele 6,045]

Welcome to Kokos!!!! Hope your Goldfish feels better.