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Considered by many scientists the fastest fish in the ocean, [8] sailfish grow quickly, reaching 1.2–1.5 m (4–5 ft) in length in a single year, and feed on the surface or at middle depths on smaller pelagic forage fish and squid. Sailfish were previously estimated to reach maximum swimming speeds of 35 m/s (125 km/h), but research published ...
Fish without these features use dynamic lift instead. It is done using their pectoral fins in a manner similar to the use of wings by airplanes and birds. As these fish swim, their pectoral fins are positioned to create lift which allows the fish to maintain a certain depth. The two major drawbacks of this method are that these fish must stay ...
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.
The marlins are Istiophoriform fish, most closely related to the swordfish (which itself is the sole member of the family Xiphiidae).The carangiformes are believed to be the second-closest clade to marlins.
As fast-swimming, agile predators, they feed primarily on free-swimming bony fishes and cephalopods. Other species of reef sharks include the Galapagos shark, the tawny nurse shark and hammerheads. The whitetip reef shark is a small shark usually less than 1.6 m (5.2 ft) in length.
A water-quality problem will affect fish behaviour and can be shown by clamped fins, reduced feeding, erratic swimming, and gasping at the surface. [55] Seahorses require vertical swimming space to perform reproductive functions and to prevent depth-related health conditions like gas bubble disease, so a refugium that is at least 20 inches by ...
The barracuda has a large swim bladder. Barracudas are more or less solitary in their habits. Young and half-grown fish frequently congregate in shoals. The Great Barracuda captures small prey by the ram-capturing method. This is done by opening their mouth and engulfing the prey with just one bite.
Enypniastes [a] is a genus of deep-sea sea cucumber.It is monotypic, being represented by the single species Enypniastes eximia.Due to its unique appearance, the species has been dubbed the headless chicken fish, headless chicken monster, and the Spanish dancer.