Snailfish tend to be the opposite of other deep-sea fish where the juveniles live at the deeper end of their depth range. “In other trenches such as the Mariana Trench, we were finding them at increasingly deeper depths just creeping over that 8,000m mark in fewer and fewer numbers, but around Japan they are really quite abundant.”ĭespite the large and somewhat lively population of fish living at these depths, the solitary individual that claims the accolade of the deepest ever found, was an extremely small juvenile. “We have spent over 15 years researching these deep snailfish there is so much more to them than simply the depth, but the maximum depth they can survive is truly astonishing.” Image: Images of the snailfish alive from 7500-8200m in the Izu-Ogasawara Trench. “The Japanese trenches were incredible places to explore they are so rich in life, even all the way at the bottom,” Professor Jamieson said. These snailfish, Pseudoliparis belyaevi, were the first fish to be collected from depths greater than 8,000m and have only ever been seen at a depth of 7,703m in 2008. In the Izu-Ogasawara Trench, south of Japan, the team managed to film the deepest record of a fish, the unknown snailfish species of the genus Pseudoliparis, at a depth of 8,336m.Ī few days later, in the Japan Trench the team collected two fish in traps from 8,022m deep. UWA Professor Alan Jamieson, founder of the Minderoo-UWA Deep Sea Research Centre and chief scientist of the expedition, worked with a team from the Tokyo University of Marine Science and Technology to deploy baited cameras in the deepest parts of the trenches. The mission was to explore the Japan, Izu-Ogasawara and Ryukyu trenches at 8,000m, 9,300m and 7,300m deep respectively as part of a 10-year study into the deepest fish populations in the world. In August 2022, the research ship DSSV Pressure Drop undertook a two-month expedition to the deep trenches around Japan in the north Pacific Ocean. The problem becomes that if you release the fish, it may not survive because of internal injuries it has suffered during the trauma of being caught.“We have spent over 15 years researching these deep snailfish there is so much more to them than simply the depth, but the maximum depth they can survive is truly astonishing.” UWA Professor Alan Jamieson While you can mitigate this effect by pulling a fish up slowly from the depths of the ocean, it still may be too fast. This can crush internal organs, causing fatal injuries. A hooked fish, however, cannot reabsorb this gas into its swim bladder quickly enough. As they ascend in the water, this gas expands because the water pressure is less, and the gas is normally reabsorbed into the fish’s bloodstream, or it’s released by burping. This is because these fish have what is called a fish bladder that they use to control their buoyancy with gases from their bloodstream. This is the same for deep sea divers when they rise too fast. This is where the fish is brought up to the surface too quickly when it’s caught, so they don’t have time to adjust their bodies. Since offshore fish live in such great depths, they can suffer from a condition called barotrauma. ![]() The answer is yes, you can catch and release deep sea fish however, it must be done carefully and controlled. Call our Louisiana fishing charter company to book a trip today! Below, we’ll take a look at the question of if you can catch and release offshore fish. Some people just love the challenge of fishing others want to admire their beauty and wonder at the marvels that nature creates. One of the questions we get a lot from our customers is, “Can you catch and release deep sea fish?” After all, many people just like fishing, but they don’t necessarily want to take their fish home and fry them up. We even offer housing in Venice with our houseboat options, where you can stay right on the ocean, be lulled to sleep by the sound of the waves, and wake up to gulls calling. Our passionate fishing guides lead corporate charters, combo charters, in-shore fishing charters, and off-shore charters. We’ve been helping our customers have a great time on the ocean and reel in the big one that they’ve always wanted for years. ![]() Louisiana Bluewater Charter Company is a charter fishing company in Venice, Louisiana.
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