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2 giorni fa · Nacre (/ ˈ n eɪ k ər / NAY-kər, also / ˈ n æ k r ə / NAK-rə), also known as mother of pearl, is an organic–inorganic composite material produced by some molluscs as an inner shell layer. It is also the material of which pearls are composed. It is strong, resilient, and iridescent.
4 giorni fa · The ocean sunfish or common mola (Mola mola) is one of the largest bony fish in the world. It is the type species of the genus Mola, and one of five extant species in the family Molidae. It was once misidentified as the heaviest bony fish, which was actually a different and closely related species of sunfish, Mola alexandrini.
2 giorni fa · A fish (pl.: fish or fishes) is an aquatic, anamniotic, gill-bearing vertebrate animal with swimming fins and a hard skull, but lacking limbs with digits. Fish can be grouped into the more basal jawless fish and the more common jawed fish , the latter including all living cartilaginous and bony fish , as well as the extinct placoderms and ...
7 lug 2024 · Fish - Reproduction, Spawning, Fertilization: The methods of reproduction in fishes are varied, but most fishes lay a large number of small eggs, fertilized and scattered outside the body. Some fishes are hermaphroditic. Self-fertilization is probably rare.
7 lug 2024 · Fish, any of approximately 34,000 species of vertebrate animals (phylum Chordata) found in the fresh and salt waters of the world. Living species range from the primitive jawless lampreys and hagfishes through the cartilaginous sharks, skates, and rays to the abundant and diverse bony fishes.
6 giorni fa · Definition. The zebrafish is a member of the minnow family of fish. The zebrafish is a model organism used to study the development of vertebrates. In this regard, zebrafish are useful because the embryo is transparent, it develops outside of its mother, and its development from eggs to larvae happens in just three days.
16 lug 2024 · A good fish film is an action-packed deep-sea adventure appealing to kids of all ages. On this list, you'll find classics like Finding Nemo and Ponyo. You'll even find a few mermaid flicks on here, especially if their best friend has two fins and plenty of scales.
