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Позвоночник рыб состоит из отдельных, несращённых позвонков. Позвонки рыб амфицельные (то есть обе их торцевые поверхности вогнутые), между позвонками находится хрящевая прослойка; невральные дуги, расположенные сверху над телами позвонков, формируют позвоночный канал, защищающий спинной мозг. Позвоночник делится на два отдела: туловищный и хвостовой. От позвонков туловища в стороны отходят рёберные отростки, к которым крепятся рёбра.
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The research of fishes, the science of ichthyology, is of broad importance. Fishes are of interest to people For numerous explanations, the most important staying their partnership with and dependence about the surroundings. A more noticeable reason behind fascination in fishes is their job as a average but important Component of the globe’s foods offer.
На протяжении развития зародыш использует как желток яйца, так и имеющиеся в яйце капли жиров.
) results from the heat Trade procedure within the fish's gills. Heat produced by muscle mass motion is transported in deoxygenated blood towards the gills, which distribute the heat to oxygenated blood, that is then pumped by the guts to the rest of the fish's overall body.
Не характерная для рыб забота о потомстве наблюдается преимущественно у видов в приливно-отливной зоне, в узких заливах и бухтах, а также в реках и озёрах.
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Fish have several differing kinds of fins. Below is a summary of the differing types of fish fins, and in which They may be discovered on a fish’s human body. Not all fish have all
Fish or fishes? The word "fish" is usually equally singular and plural. The phrase "fishes" can be used in lieu of the plural kind when referring to many fish species.
The eggs of oviparous sharks are fertilized internally, with sperm currently being transferred to the feminine’s cloaca (an opening within the underside of the body) by means of an appendage generally known as a “clasper”, which is located guiding the male’s pelvic fins.
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