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Gyotaku (魚拓, from gyo "fish" + taku "stone impression") is the traditional Japanese method of printing fish, a practice which dates back to the mid-1800s. This form of nature printing , where ink is applied to a fish which is then pressed onto paper, was used by fishermen to record their catches, but has also become an art form of its own.
A fish scale is a small rigid plate that grows out of the skin of a fish. The skin of most jawed fishes is covered with these protective scales, which can also provide effective camouflage through the use of reflection and colouration, as well as possible hydrodynamic advantages.
Cosmine was first described in the Osteolepiform Megalichthys hibberti by Williamson in 1849, in a purely descriptive, pre-Darwinian, non-evolutionary framework. [4] Goodrich [5] expanded on Williamson's descriptions, hypothesizing a transition from a monoodontode scale (like a chondryicthian placoid scale) to a complex polyodontode scale through fusion of discrete units.
In addition other ubiquitous color variations (from red, white, and orange), jikin also have a desired pattern called rokurin, or 'Twelve Points of Red' (TPoR). Rokurin is a type of pattern commonly displayed in jikin because in Japan, the fish are often applied in the process by scraping off the red areas of the scales and face of young ...
These scales have a slight sheen that produces a pearly appearance. [2] [3] The name "calico goldfish" came about because the first fish that were introduced with this type of scales had a mottled calico pattern with several colours. [1] Calico goldfish often have patches of red, yellow, grey and black along with dark speckles on a blue background.
Keeled scales of a colubrid snake (banded water snake; Nerodia fasciata). In zoology, a scale (Ancient Greek: λεπίς, romanized: lepís; Latin: squāma) is a small rigid plate that grows out of an animal's skin to provide protection.
Scales to be domed; Dorsal fin to be single, all other fins to be paired; Caudal fin to be divided and forked and held above the horizontal; Extremities of fins to have a slightly rounded appearance; Minimum length of body to be 5.5 cm (2¼ inches) The fish should be bright and alert and displaying well developed domed scales all over the body ...
Aristotle (ca. 340 B.C.) may have been the first scientist to speculate on the use of hard parts of fishes to determine age, stating in Historica Animalium that “the age of a scaly fish may be told by the size and hardness of its scales.” [4] However, it was not until the development of the microscope that more detailed studies were performed on the structure of scales. [5]