Gold fishes come in many fancy colors. Their appeal lies in their body colors that range from different shades of yellow to black. Of these numerous varieties of freshwater goldfishes the blue goldfish, also known as Blue Oranda goldfish, is a rare species of fish.
It automatically assumes a pivotal position in an aquarium or goldfish pond for its magnificent blue color. It usually has shades of grey on its body. Blue color is more visible on the fins and the hood on the head. A complete blue goldfish is a beauty to behold but hard to find.
Wild green, black, and brown colors of the goldfishes are caused by black and yellow pigment cells present on their bodies. The blue color on the goldfish is due to the absence of these yellow and black pigment cells or the presence of large amount of guanine on the body. The black and yellow pigments are not completely absent and a tiny amount of them may be present near the base of the fins and the lower parts of the body of a blue goldfish.
Blue goldfishes can be raised in both aquariums and outdoor ponds as well. But they are more comfortable in outdoor ponds. A minimum capacity of 30 gallons of water for aquariums and a minimum of 180 gallons of water are essential to keep these gorgeous looking fishes. They can be fed a diet of goldfish flakes or live foods in small bits.
The protein of composition of their diets should be less than 30%. By nature blue goldfishes are hardy and of a peaceful temperament. They have a playful nature and love digging up sand and gravel at the base of the pond or aquarium. It is better to have hardy cold water plants in the goldfish pond or aquarium.
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