Gold rush! First evidence of spawning migration of football-size goldfish August 15, 2016 Dr Stephen Beatty with a large goldfish Murdoch researchers have discovered for the first time football-sized goldfish are travelling hundreds of kilometres each year through WA waterways. This discovery has major implications for controlling the species in south-western WA. Dr Stephen Beatty and researchers from the Centre of Fish and Fisheries used strategically placed acoustic receivers to examine the movement patterns of an introduced goldfish population in the Vasse River, revealing the population travelled great distances. “Our research discovered the fish displayed a significant seasonal shift in habitats during breeding season, with one fish moving over 230 kilometre during the year,” Dr Beatty said. Until now, little has been known about the movement patterns of goldfish, which has hampered the development of effective control programs. “The goldfish population in the nutrient rich Vasse River has existed for over two decades and has the fastest known individual growth rate of this species in the world,” continued Dr Beatty. “The results of this study will have important direct management implications, enabling more strategic development of effective control programs for the species such as targeting migratory pathways.” Goldfish are native to eastern Asia but are now considered one of the world’s worst invasive aquatic species, with at least 76 invasive freshwater fish species introduced to rivers in Mediterranean climate regions around the world. Defined as an alien species introduced to Australian freshwater bodies, goldfish can enter river systems after being dumped from aquariums into catchment lakes. Once the fish become established, their eradication is often difficult, which is having a significant impact on Australian ecosystems. “Once established, self-sustaining populations of alien freshwater fishes often thrive and can spread into new regions, which is having a fundamental ecological impact and are major drivers of the decline of aquatic fauna,” added Dr Beatty. Dr Beatty said the invasive fish can potentially impact water quality, introduce disease, disturb habitat and compete with native species putting them under serious pressure, which just adds to the existing threats associated with habitat and water quality decline. The paper has been published in the international journal Ecology of Freshwater Fish. Print This Post Media contact: Luke McManus Tel: (08) 9360 2491 | Mobile: 0400 297 221 | Email: L.McManus@murdoch.edu.au Categories: General, Murdoch achievements, Research Tags: Research, australia, centre of Ffsh and fisheries, dr stephen beatty, football sized goldfish, invasive aquatic species, murdoch university, vasse river Comments (8 responses) Unwanted pet goldfish growing to the size of a football in Australia Spy News Agency | Spy News Agency August 17, 2016 […] researchers from Murdoch University in Perth, Western Australia, have tracked these huge fish travelling hundreds of kilometres in just […] A pet goldfish set free in a river can grow to almost 10 times its original size – Rare August 18, 2016 […] Dr. Stephen Beatty said he and his team from Murdoch University have roamed the rivers and found many former pet fish weighing more than a kilogram, or about two pounds. The largest goldfish discovered weighed four pounds. […] Goldfish and Lionfish | melaniethehomebody August 18, 2016 […] the size of footballs are clogging Australian rivers and driving down the populations of native fish. The fish, which can grow to five pounds, were […] Football-sized goldfish a real problem in Australia - August 18, 2016 […] “Once established, self-sustaining populations of alien freshwater fishes often thrive and can spread into new regions, which is having a fundamental ecological impact and are major drivers of the decline of aquatic fauna,” said lead author Stephen Beatty in a statement. […] Pet goldfish dumped into lakes are growing into football-sized monsters | E-Scientific News August 18, 2016 […] “our research found fish showed a significant seasonal variation in the habitat during the breeding season, with one fish moving more than 230 kilometers per year," said Beatty. […] Unwanted Pet Goldfish Grow to Size of Football in Australia – Awful.News August 19, 2016 […] researchers from Murdoch University in Perth, Western Australia, have tracked these huge fish travelling hundreds of kilometres in just […] Revenge of the goldfish! Dumped pets growing into giant monsters – Treehugger | Posts ABC August 19, 2016 […] to a new study from Australia's Murdoch University, goldfish were one of the first fishes to be domesticated and have been widely introduced across […] Don’t Dump Goldfish Into Lake, Your Pet Fish May Turn Into An Enormous Pest – DreamLiner USA August 20, 2016 […] a fundamental ecological impact and are major drivers of the decline of aquatic fauna," said […] Leave a comment Name (required) Mail (will not be published) (required) Website You can use these tags : <a href="" title=""> <abbr title=""> <acronym title=""> <b> <blockquote cite=""> <cite> <code> <del datetime=""> <em> <i> <q cite=""> <s> <strike> <strong> We read every comment and will make every effort to approve each new comment within one working day. To ensure speedy posting, please keep your comments relevant to the topic of discussion, free of inappropriate language and in-line with the editorial integrity of this newsroom. 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