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Fish locomotion is the various types of animal locomotion used by fish, principally by swimming. This is achieved in different groups of fish by a variety of mechanisms of propulsion, most often by wave-like lateral flexions of the fish's body and tail in the water, and in various specialised fish by motions of the fins .
Similar to adaptation in avian flight, swimming behaviors in fish can be thought of as a balance of stability and maneuverability. [7] Because BCF swimming relies on more caudal body structures that can direct powerful thrust only rearwards, this form of locomotion is particularly effective for accelerating quickly and cruising continuously.
A great cormorant swimming. Aquatic locomotion or swimming is biologically propelled motion through a liquid medium. The simplest propulsive systems are composed of cilia and flagella. Swimming has evolved a number of times in a range of organisms including arthropods, fish, molluscs, amphibians, reptiles, birds, and mammals.
In practice, fish swim at different depths according to factors such as the temperature and amount of light in the water, and the speed and direction of water currents. [4] A downrigger consists of a one or two metre horizontal pole which supports a weight, typically about 3 kg (6.6 lb) of lead, on a steel cable.
They swim with their mouth wide open and their opercula fully expanded. Every several feet, they close and clean their gill rakers for a few milliseconds (filter feeding). The fish all open their mouths and opercula wide at the same time (the red gills are visible in the photo below—click to enlarge).
A walking fish, or ambulatory fish, is a fish that is able to travel over land for extended periods of time. Some other modes of non-standard fish locomotion include "walking" along the sea floor , for example, in handfish or frogfish .
A video taken by Evan Brodsky of the Monterrey Bay Whale Watch shows the white orca swimming with its mom and peers on Nov. 24. In an Instagram post , Brodsky said the nickname Frosty was given to ...
The fish kick is essentially performing the dolphin kick sideways. [1] The legs go left and right in a wave motion. [ 2 ] This may have the beneficial effect of pushing water sideways, where it is not impeded, rather than the dolphin kick, which sees the water stopped by the top and bottom of the pool.
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