Links, forums and books
 

Links to goldfish sites I like:
 

http://geocities.com/greenngoldsg/index.html

The Vermillion Goldfish Club in Singapore, experts in green water. They also breed their own line of ranchu, the Singachu.

http://www.bristol-aquarists.org.uk/index.htm

Information about different fancy goldfish varieties

Chinese Goldfish Museum

Showcases the large variety of Chinese goldfish

http://www.geocities.com/Tokyo/4468/

A wealth of goldfish information

http://www.tsugarunishiki.com/

Japanese site dedicated to tsugaru nishiki

http://www.shubunkin.de

Breeder of blue calico shubunkin, fantail, shorttail ryukin, ranchu..

 
Online goldfish forums:
 

http://www.rafflesgold.com

Singapore

http://www.goldfishkeepers.com/

USA

 
Books about goldfish:
 

Fancy Goldfish

Johnson and Hess

Kingyo

Kazuya Takaoka, Sachiko Kuru

Goldfish Varieties and Genetics

Smartt

Goldfish Guide

Matsui

Fish Health

Dr. Christian Andrews, Adrian Exell & Dr. Neville Carrington