Pelvic fin - Wikipedia
网页Pelvic fins or ventral fins are paired fins located on the ventral (belly) surface of fish, and are the lower of the only two sets of paired fins (the other being the laterally positioned pectoral fins).
Fish fin - Wikipedia
网页The pelvic fin assists the fish in going up or down through the water, turning sharply, and stopping quickly. In gobies, the pelvic fins are often fused into a single sucker disk. This can be used to attach to objects [ 1 ] Pelvic fins can take many positions along the ventral surface of the fish.
Pelvic fins – Fishionary - Fisheries
网页2014年4月11日 · The pelvic fins are paired fins found on the ventral (bottom) side of fish. In teleost (bony) fishes, pelvic fins placement gives some indication of evolution. For more basal groups, the pelvic fins are located at mid-body in the abdominal region. For more derived fishes, the pelvic fins are located in a thoracic or even jugular (throat) position.
Structure and Function - Fish | manoa.hawaii.edu…
网页Fish have two sets of paired fins: pectoral and pelvic (Fig 4.25). The pectoral fins are vertical and are located on the sides of the fish, usually just past the operculum (Table 4.7). Pectoral fins are similar to human arms, which are found near the pectoral muscles.
腹鳍（鱼的器官）_百度百科
网页腹鳍（pelvic fins）相当于垂直尾翼，侧滑时起增加飞机航向稳定性的作用。 腹鳍还可以抵消一部分垂尾侧向力对机身的扭矩，减少机身扭转变形。 网页 新闻 贴吧 知道 网盘 图片 视频 地图 文库 资讯 采购 百科
Pelvic Fin - an overview | ScienceDirect Topics
网页Pelvic Fins. Pelvic fins, although little studied, are of great interest as they are one of the most morphologically plastic structures within the fishes. The function of the pelvic fins is as variable as their morphology between fish. They are used in swimming as an aerofoil, brake, propulsor, and rudder, for ground walking, and for hovering.
The evolutionary history of the development of the pelvic …
网页2012年8月23日 · In fish, pelvic fins vary greatly in morphology, function and position, whereas in tetrapods they have evolved into robust weight-bearing hindlimbs necessary for terrestrial locomotion.
Pelvic fin - Oxford Reference
网页2024年9月13日 · One of the pair of fins positioned on the underside of the body of a fish. Depending on the species, the pelvic fins can be found in a mid-ventral (abdominal) position, underneath or just behind the pectoral fins (thoracic position), or in front of the pectorals in the throat region (jugular position).
Pelvic fins in teleosts: structure, function and evolution
网页2010年10月12日 · The pelvic fins of teleosts are paired appendages that are considered to be homologous to the hind limbs of tetrapods. Because they are less important for swimming, their morphology and function can be flexibly modified, and such modifications have probably facilitated the adaptations of teleosts to various environments.
Pelvic fin locomotor function in fishes: three-dimensional …
网页2008年9月15日 · This paper challenges the understanding that pelvic fins have a limited and passive function by proposing three new hypotheses. First, pelvic fins in rainbow trout have complex three-dimensional kinematics during slow-speed steady swimming and manoeuvres. Second, pelvic fins are moved actively against imposed hydrodynamic loads.
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