INTRODUCTION
cold water fishkeeping oldest by far of the three main areas of the aquarium hobby.this should not be asurprising fact,for man became interested in fish(for food)and fishkeeping(for pleasure)long before the discovery of electricity led to the now taken for granted ease of tropical fishkeeping.
Despite its apparent narrowness of appeal,the coldwater aquarium has much to offer:the fishes can cover a wide range of sizes and colours ofthen exceeding those in the tropical field;and there is a very great opportunity for line-breeding,and the search for the perfect specimen is always being under taken by a coldwater fishkeeper somewhere.