All fins should be paired except for the Dorsal, and the Dorsal fin should be very high and stiff, like the crest on a Roman Soldier's helmet, in a curving mohawk-like shape. Large Dorsal fins are desirable on Ryukins so long as they do not droop over. Ryukins have no standard fin type
kleuren:
e goldfish, like all other fish, is a complex living being. Contained within the dermis, or lower skin layer of the goldfish, is a substance called guanine. This is a silvery-white colour and very reflective. It is this guanine which reflects light through the transparent scales of the fish to give it a shiny appearance. Generally, goldfish are placed in three separate groups dependent on the amount of guanine present and how it is disbursed within the fish. We know these groups as Metallic, Nacreous and Matt.
In the metallic group the guanine is placed in the upper areas of the dermis, allowing good reflection of light through the scales and giving the fish the appearance of burnished metal. Nacre means mother-of-pearl so, taking things literally, a nacreous fish has a mother-of-pearl sheen to it. This is caused by the almost complete absence of the upper layer of guanine allowing the layers situated deeper beneath the dermis to show through and giving the fish its silky lustre. A matt fish has a complete lack of guanine and, as it has no reflective tissue, a totally matt appearance all over its head and body.
a). A Metalic tuh exhibits no Matt scaling
http://www.fbas.co.uk/Goldfish%20Book.PDF
en nog wat meer bronnen maar als jij er tegenin gaat weet ik niet meer wat ik nu voor waarheid aan moet nemen. vandaar dat ik om jou bronnen vraag.
en anders een standaard in elkaar zetten en die aanhouden.
want hoe meer ik zoek hoe meer je vind, en het is allemaal net even anders.