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The presence of these alien fish – which are being farmed illegally in the state – could bode ill for Kerala’s native fish diversity, claim the scientists. “To be billed as an invasive, the species must proliferate to unnatural abundances in the habitats where they get naturalised, and also outcompete other species,” he wrote in an email. The freshwater giant has … Copyright © 2020. “No new licenses should be given to farms for importing alien species,” he added. Both species are also top predators in their native habitats, feeding on smaller fish (which puts Kerala’s small native species at risk). Alligator gar too are formidable predators; they are piscivorous generalists with an affinity towards live fish, said Raghavan, an assistant professor at KUFOS. Like the arapaima, the gar too is alien: its native habitats are the freshwater lakes of North America. But this diversity is at risk due to ‘fugitive’ fish such as the arapaima and gar that escaped from aquaculture facilities and farms during the floods, claim the authors. For instance, in the case of the African catfish, identifying “recruitment areas” from where invasive fish fingerlings could be dispersing to other connected habitats such as swamps and wetlands (habitats with standing vegetation and slush where the catfish thrives very well and breeds) could be important, added Basheer. In Brazil, they are known as \"pirarucu,\" a word from the Tupi language, which translates roughly as \"red fish.\" In Peru, they are known … It was September 7, barely a month after the floods of 2018 had wrecked large parts of Kerala. Arapaima introductions in some American countries have caused a decline in native species, which in turn has affected local fisher livelihoods. The government should also audit fish farms to see what alien species they are stocking, and make it compulsory for farms to declare these species and their numbers, said Raghavan. Squirming around at the base was a fish he had never seen before: flat-headed and sporting large scales tinted in pink and cream. But this diversity is at risk due to ‘fugitive’ fish such as the arapaima and gar that escaped from aquaculture facilities and farms during the floods, claim the authors. The Arapaima is a very large fish that dwells in the Amazon river basin. “There is no clear cut policy to handle invasive species in India, not to speak about a dedicated institution to foresee invasive species management, despite being part of international commitments such as the Convention on Biological Diversity,” he adds. Alligator gar in Kerala’s waters could indeed be a potential concern because the species is primarily carnivorous and can feed on native fish, said V. S. Basheer, principal scientist at Kochi’s National Bureau of Fish Genetics Resources (NBFGR). Arapaima gigas Fish Babies 9 Inch size Available for sale. A new family of bony freshwater fish has been discovered from paddy fields of Kerala. With the floods that have once again occurred in some parts of Kerala over the past few days, there is indeed a chance that exotics held in captive facilities have moved into nearby natural waters once again, according to Raghavan. While alligator gar can measure up to three metres in length, arapaima is five metres long and weigh up to a whopping 200 kg. Clear definitions of when a species is invasive in the real sense and causes ecosystem- and fisheries-level impacts are also crucial, he said. Arapaima which is one of the rare fishes species that can breathe air from the atmosphere. His journey, however, was not in vain; he was able to procure a small piece of fish tissue from the head. Kerala’s flood ‘fugitives’ Kerala’s river systems, which the authors study, are home to around 200 species of fish, 30 percent of which are endemic to the region. Both survive on small fish. Comments: These are fabulous looking fish, with unique characteristics. And the team recorded only six arapaima and gar in total: a number that seems barely enough to ‘threaten’ river systems. Another new species spotted in Kerala's newly-calm waters is the Arapaima (pictured), a vicious predator of Brazilian origin known to survive out of water for a considerable amount of time. Their large scales are tough for predators to break through. Pet Shop Directory represents exclusively the directory or list of Pet Shops which include Pet Store, Pet Farms, Pet Suppliers, Pet Wholesalers etc. His journey, however, was not in vain; he was able to procure a small piece of fish tissue from the head. Arapaima (L) and alligator gar (R), two alien fish species found in Kerala’s rivers after the 2018 floods. Arapaima is one of the world’s largest freshwater fish, endemic to the Amazon in South America and the alligator gar is from the freshwater lakes of North America. Kothamangalam (Ernakulam): A giant fish that weighs more than 100 kg and has a length of 6.75 feet has drawn crowd to the fish farm in Nadukani. But the larger problem of aliens turning invasive is not restricted to Kerala’s waters alone. “The customs handle violations that occur at the frontiers such as seaports and airports and there have been recent instances of seizing some prohibited fish species too,” he said. But not all exotic species become invasive, cautions Nachiket Kelkar from the Ashoka Trust for Research, Ecology and the Environment (ATREE) in Bengaluru, who has studied fish communities in the Western Ghats and north India. The Arapaima or Paicheis one of the largest species of freshwater fishes. he Chinese fishing net in Kodungalloor, Kerala, where Jaison Kallarackal caught the arapaima. But though neither of the fish seems to have established “sustaining populations” in any of these river systems, their presence here is still a cause for concern, claims Kumar, professor and head of the Department of Aquatic Biology and Fisheries at the University of Kerala. Kerala’s flood ‘fugitives’ Kerala’s river systems, which the authors study, are home to around 200 species of fish, 30 percent of which are endemic to the region. Dwelling from the Amazonian basins of South America, these bonytongues can reach a length of up to three metres and weigh upwards of450 pounds.. Arapaimas are important food fish in South America.Therefore, several farms breed them in large quantities. It is also known to be a vicious predator. The largest ever recorded was 15 ft. long, but because of overfishing it is highly unlikely to encounter individuals longer than 6 ft. in the wild. It was 7 September, barely a month after the floods of 2018 had wrecked large parts of Kerala. But unless we know the numbers of these aliens in our river systems or their reproductive status, it would be impossible to make predictions, he added. Squirming around at the base was a fish he had never seen before: flat-headed and sporting large scales tinted in pink and cream. 1Up In The House | Final Circle 1v3 by MorTaL OP? Arapaima (L) and alligator gar (R), two alien fish species found in Kerala’s rivers after the 2018 floods. Their dorsal and anal fins are located far back on the body, giving the posterior end of the animal a large, flattened appearance. Smaller sized pellets when young, and larger sized pellets when bigger, is the ideal food for these fish. Kumar, who documented how ornamental exotic South American suckermouth armoured catfishes (genus Pterygoplichthys) were invading the drain networks of Thiruvananthapuram city in a study in 2015, found that traders and aquarium hobbyists were releasing these fish into drains when they grew too large for their aquariums or tanks. But unless we know the numbers of these aliens in our river systems or their reproductive status, it would be impossible to make predictions, he added. Additionally, arapaimas are air-breathers, a feature that could help them survive even in polluted habitats. There are no previous records of Arapaima being spotted in a waterbody anywhere in India. around the world. Several fish introduced legally in India for aquaculture such as tilapia are thriving in many water bodies across the country. Some species may need to be addressed specifically. The mouth is turned upwards which helps with feeding as they consume food from the surface. Featured Today 11-28-2020. Genetic tests revealed that it was the arapaima, one of the world’s largest freshwater fish, endemic to the Amazon in South America. Size is about 5 inches roughly. OLX provides the best Free Online Classified Advertising in India. Aug. 14, 2014, 12:18 AM UTC / Source: Live Science. But now they are raised for us on a famous fish farm and are found living in aquariums all over the world. Alligator gar too are formidable predators; they are piscivorous generalists with an affinity towards live fish, said Raghavan, an assistant professor at KUFOS. At the state level, multiple government departments such as revenue, fisheries and district administrations would have to come together along with research institutes, the forest department and local authorities to implement management interventions, said Basheer. For instance, in the case of the African catfish, identifying “recruitment areas” from where invasive fish fingerlings could be dispersing to other connected habitats such as swamps and wetlands (habitats with standing vegetation and slush where the catfish thrives very well and breeds) could be important, added Basheer. * Both arapaima and alligator gar have been found in the Periyar and Chalakudy rivers, posing major risk to small fish. “Whether the species could turn invasive would depend on the number of breeding pairs that entered Kerala’s water bodies,” agreed Kumar. Testimonials. Mongabay-India is a conservation and environment news and features service that aims to bring high quality, original reports from nature’s frontline in India. Arapaima (L) and alligator gar (R), two alien fish species found in Kerala’s rivers after the 2018 floods. When a final heave raised the net slightly above water, Kallarackal could not believe his eyes. There are news reports of alligator gar sightings from waterbodies in the states of Maharashtra, Odisha, West Bengal, Telangana and Andhra Pradesh. While existing laws such as the Wildlife Protection Act of 1972 and the Environment Protection Act of 1986 have included provisions for managing invasive species as do some prevailing quarantine acts, there is no national policy to deal with these species, pointed out Kumar. But this diversity is at risk due to ‘fugitive’ fish such as the arapaima and gar that escaped from aquaculture facilities … They have a large and wide mouth with a toothed tongue which is a characteristic of the osteoglossiformes order. New Arrivals. In their opinion note in Current Science, Kumar and his colleagues point out that this is in conflict with the Aichi Biodiversity Targets (which specify controlling and eradicating alien species as well as sustainable management of aquaculture, among others) that India has agreed to ratify as well. 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