What is the pattern used in fish scale?

Fish scale patterns are defined by structural elements representing single cycles of development. Such patterns are defined as possessing sequentially formed structural layers over time. Each layer is developed during one cycle of growth.

How are fish scales made?

Fish scales are formed of bone from the deeper, or dermal, skin layer. The elasmobranchs (e.g., sharks) have placoid scales, which are bony, spiny projections with an enamel-like covering.

Do all fishes have scales?

Do all fishes have scales? No. Many species of fishes lack scales. All the clingfishes (family Gobiesocidae) for example, are scaleless.

Why the fish has scales story summary?

This Filipino folktale talks about a beautiful girl who grew up being vain and spoiled. She was admiring her beauty by the river when the chief of crabs adored her beauty and spoke to her. She was shocked and shoved away the crab. In return, the chief scratched her face and cursed her to become a fish with many scales.

What is the purpose of scales?

Protection and locomotory support are the central similarities between the two animal groups’ scales. These key functions tie back to the need for animals to have a defense against the environment and predators, as well as the ability to move easily for a variety of different purposes.

What is fish scale made of?

The inner part of the scales is made of dense lamellar bone called isopedine. On top of this lies a layer of spongy or vascular bone supplied with blood vessels, followed by a complex dentine-like layer called cosmine with a superficial outer coating of vitrodentine. The upper surface is keratin.

What are scales made from?

The inner layer of the scale is made of lamellar bone. On top of this lies a layer of spongy or vascular bone and then a layer of dentine-like material called cosmine. The upper surface is keratin.

Why are fish scales important?

Scales protect fish, much like a suit of armor. All fish have a slimy covering of mucus. This substance allows the fish to swim through the water with very little drag and also makes it difficult for other organism to attach to the fish.

Why fish have scales Filipino folktale?

The girl screamed and drove the ugly crab away. Humiliated, the chief of the crabs scratched the girl’s face with his claws and cursed her to become a fish covered with scales. This is why it is said that instead of admiring their reflection, fishes dart around and avoid it.

What is the moral lesson of the girl who turned into a fish?

While fairy tales sometimes have princes go on quests, The Girl-Fish features a selfish girl undergoing a quest where she becomes the heroine, and learns a valuable lesson in compassion and kindness, two traits that fairy tales often teach us.

Why do fish need scales?

Scales protect fish, much like a suit of armor. All fish have a slimy covering of mucus. This substance allows the fish to swim through the water with very little drag and also makes it difficult for other organism to attach to the fish. So mucus is also a protective feature.

What are fish scales made of and how are they formed?

Scales are small plate-shaped dermal or epidermal structures that are found in the outer skeletons of fish, reptiles, or some mammals. The skeletons of many vertebrates are covered by two types of scales, namely epidermal and dermal. Epidermal scales originate from the malpighian layer of the epidermis.