Fantail Goldfish Pregnancy

Question
I Have 3 Fantail Goldfish In a 10 Gallon Tank. The 3rd Fish Belly Was Kinda Already Big Egged Shaped Body When We Got It. But Eversince Then My 1st Fish Has Been Nipping At Its Backside and Stuff And Its Belly Has Gotten To About The Size Of A Golf Ball. Overly Large My 2nd Fish body is a lil bigger but moderate because it has grown alot n my 1st fish is the same. But Im Wondering if my 3rd Fish Is Pregnant Or Wat?...I Have Only Had It For About A Week Or Less.It Is Swimming Fine Now... I Have Pictures To Show U Of It If U Need

Answer
No pictures are needed.

Your fish will not last long in that size tank.

They all have something called Swim Bladder Disorder. Is is caused by poor water quality and too small a tank. Fish have an organ that is filled with air. When there are too many toxins in the water, this can burst or slowly expand like a balloon, often with fatal affects.

Add about a half tablespoon of salt to your tank, and start doing 25% water changes everyother day. It usually doesn't go away, but you may get lucky. Those fish should be in a tank 3 times that size.

-Nick