![]() ![]() The suprabranchial chamber of Channa possesses a richly vascularized wall for gas exchange. This fish has a peculiar accessory breathing organ, the suprabranchial chamber, by which the fish breathes air at the water's surface using a cough-like mechanism (Ishimatsu and Itazawa, 1981 Lefevre et al., 2014), making possible short-term survival out of water (Nagata and Nakata, 1988). The northern snakehead (Channa argus) is a species of air-breathing fish that is widely distributed in East Asia. The air sacs are handy for surviving in waters that are low in oxygen, and even allow the fish to survive out of water for a couple of days, as long as it doesn't dry out.Ī research article published in Biology Open in 2018 elaborated on the air-breathing abilities of the snakehead: Unlike most fish, the northern snakehead has little sacs above its gills that function almost like lungs the fish can surface and suck air into the sacs, then draw oxygen from the stored air as it swims. ![]() This fish can also use its unique bimodal breathing ability to move between bodies of waters. This allows the snakehead to survive in low oxygen water. The snakehead can store atmospheric oxygen in this organ and then draw from this supply as it swims. The northern snakehead ( Channa argus) is a bimodal breathing fish thanks to a lung-like labyrinth organ near its gills. There are approximately 21 species of snakehead fish. However, some readers may have been left with the impression that this species of fish can live on land for an indefinite period of time. The snakehead fish can truly survive on land. "We are now taking steps to determine if they have spread from this water body and, hopefully, keep it from spreading to other Georgia waters." "Thanks to the quick report by an angler, our staff was able to investigate and confirm the presence of this species in this water body," said Matt Thomas, chief of fisheries for the Wildlife Resources Division. And officials are warning anyone who comes into contact with the species to kill it immediately.Īn angler caught the northern snakehead fish this month in a pond in Gwinnett County, the Georgia Department of Natural Resources' Wildlife Resources Division said Tuesday. Officials want it deadĪn invasive fish species that can breathe air and survive on land has been found in Georgia for the first time. While these stories largely dealt with wildlife officials' attempts to eradicate the species, what caught the attention of most readers were brief mentions of this fish's unique ability to survive on land.Ī snakehead fish that survives on land was discovered in Georgia. 10, 2019, many readers came across news stories about an invasive species of fish called the snakehead fish that had been discovered in Georgia. According to fossil records, they have been on Earth for more than 500 million years! The total number of living fish species-about 32,000- is greater than the total of all other vertebrate species (amphibians, reptiles, birds, and mammals) combined.However, the snakehead fish can not live on land indefinitely. Another is that fish are very old on the evolutionary scale. The animals in this group live in a variety of habitats ranging from coral reefs and kelp forests to rivers, streams, and the open ocean. ![]() One reason fish are so diverse is that 70 percent of the planet is covered in water. Others can find their prey and even navigate by detecting electrical charges. Many can detect motion in the water using a special row of scales with sensors known as the lateral line. Because water transmits sounds, disperses chemicals, and conducts electricity better than air, fish rely less on their vision and more on their hearing, taste, and smell. Some species, such as the weedy sea dragon, are so bizarre they seem almost unreal.įish have developed special senses, too. Whale sharks, the largest fish, give birth to live young and eat only tiny fish, squid, and plankton. Eels, by contrast, have worm-like bodies and exceedingly slimy skin. Fin fish like salmon have gills, are covered in scales, and reproduce by laying eggs. All fish share two traits: they live in water and they have a backbone-they are vertebrates.Īpart from these similarities, however, many of the species in this group differ markedly from one another. ![]()
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