An Australian state closed two beaches after dead fish and an unusual off-white foam washed ashore while surfers reported feeling unwell, officials said on Tuesday. Watch to know more!

Toxic foam washes ashore as dead fish pile up in Australian beaches

Underwater footage from Spain’s Canary islands shows the richness of marine diversity on the seabed.

Diversity of fishes in the Arinaga islands

3D printing is one of the most innovative developments in recent years. It is changing business models and transforming working environments. 3D printing has impacted aerospace, medical technology as well as the automotive industry. 3D Printing, however, has now also stepped into the food industry. Apart from 3D printed models & buildings, ready-to-cook 3D printed fishes are also entering the market.

Now you can 3D print a new kind of fish to fry

<p>Ever seen an octopus punching a fish? Turns out, it happens in nature more often than you think. And no, octopuses don’t do it to always serve a purpose. Sometimes, it’s simply out of… spite!</p>

<p>A new research published in “Ecology” documents octopuses punching fish during collaborative feeding sessions.</p>

<p><strong>Also read:&nbsp;</strong><a href="https://www.wionews.com/world/an-arrow-went-through-this-deers-head-and-it-is-still-alive-350668" hreflang="en">An arrow went through this deer's head and it is still alive</a></p>

<p>During food sessions, authors of the research found that octopuses were punching fishes to prevent exploitation and to ensure collaboration.&nbsp;</p>

<p>But they also found that in many instances, octopuses were punching fishes for no reason at all, implying they did it simply because they wanted to. Or perhaps it points to a behaviour we don’t yet understand.</p>

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<p dir="ltr" lang="en">Octopuses and fishes are known to hunt together, taking advantage of the other's morphology and hunting strategy. Since multiple partners join, this creates a complex network where investment and pay-off can be unbalanced, giving rise to partner control mechanisms. <a href="https://twitter.com/SimonGingins?ref_src=twsrc%5Etfw">@SimonGingins</a> <a href="https://t.co/MEyyaIZaxO">pic.twitter.com/MEyyaIZaxO</a></p>
— Eduardo Sampaio (@OctoEduardo) <a href="https://twitter.com/OctoEduardo/status/1340076667696533511?ref_src=twsrc%5Etfw">December 18, 2020</a></blockquote>
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<p>The researchers were able to document eight distinct events whereby the octopuses were punching fish. These were documented in the Red Sea between 2018-2019 off the coastal regions of Israel and Egypt.</p>

<p>According to the paper, the octopuses put forward a swift “explosive” motion with an arm stretching especially towards a fish, akin to what humans would call punching.</p>

<p><strong>Also read:</strong>&nbsp;<a href="https://www.wionews.com/world/from-predator-to-prey-pythons-to-become-a-menu-item-in-florida-351301" hreflang="en">From predator to prey: Pythons to become a menu item in Florida</a></p>

<p>Its victims included the following fishes: Tailspot squirrelfish, black tip, yellow-saddle, and Red Sea goatfishes. The researchers did not completely understand the punching process, but did find that it serves an important purpose in interactions among species.</p>

<p>Many species hunt for food together. Perhaps octopuses and fishes do too, taking advantage of each other’s morphology and what they bring to the table in terms of hunting capability.</p>

<p>However, with a number of fishes involved, it creates a complicated network where an unbalance of sorts may be seen. And this is perhaps why octopuses treat fishes like scum - simply to control and keep the relationship balanced.</p>


Ever seen an octopus punching a fish? Turns out, it happens in nature more often than you think. And no, octopuses don’t do it to always serve a purpose. Sometimes, it’s simply out of… spite!

Ever seen an octopus punching a fish? Turns out, it happens in nature more often than you think. And no, octopuses don’t do it to always serve a purpose. Sometimes, it’s simply out of… spite! A new research published in “Ecology” documents octopuses punching fish during collaborative feeding sessions. Also read: An arrow went through this deer's head and it is still alive During food sessions, authors of the research found that octopuses were punching fishes to prevent exploitation and to ensure collaboration. But they also found that in many instances, octopuses were punching fishes for no reason at all, implying they did it simply because they wanted to. Or perhaps it points to a behaviour we don’t yet understand. Octopuses and fishes are known to hunt together, taking advantage of the other's morphology and hunting strategy. Since multiple partners join, this creates a complex network where investment and pay-off can be unbalanced, giving rise to partner control mechanisms. @SimonGingins pic.twitter.com/MEyyaIZaxO — Eduardo Sampaio (@OctoEduardo) December 18, 2020 × The researchers were able to document eight distinct events whereby the octopuses were punching fish. These were documented in the Red Sea between 2018-2019 off the coastal regions of Israel and Egypt. According to the paper, the octopuses put forward a swift “explosive” motion with an arm stretching especially towards a fish, akin to what humans would call punching. Also read: From predator to prey: Pythons to become a menu item in Florida Its victims included the following fishes: Tailspot squirrelfish, black tip, yellow-saddle, and Red Sea goatfishes. The researchers did not completely understand the punching process, but did find that it serves an important purpose in interactions among species. Many species hunt for food together. Perhaps octopuses and fishes do too, taking advantage of each other’s morphology and what they bring to the table in terms of hunting capability. However, with a number of fishes involved, it creates a complicated network where an unbalance of sorts may be seen. And this is perhaps why octopuses treat fishes like scum - simply to control and keep the relationship balanced.

Research finds octopuses punch fish, but why?

Seeing a humpback whale swim, breach the surface of the sea and majestically crash back into the ocean is a breathtaking experience and according to a Brazilian environmental organization the giant mammals are even happier this year due to a decrease in shipping following the coronavirus crisis.

Humpback whales put on spectacular show while in Brazil for mating season

<p>Hundreds of thousands of fish died in outback Australia, with the government blaming the mass death on a toxic algae bloom due to changing weather conditions.</p>

<p>It is the second incident of mass fish death along the Darling River at Menindee — around 1000 kilometres west of Sydney — since December, when 10,000 fish died.</p>

<p>The New South Wales Department of Primary Industries said that a sudden cooling of the temperature over the weekend killed pre-existing algae blooms in the area, resulting in the decomposing algae draining oxygen from the river and killing the fish.</p>

<p>The Australian Broadcasting Corporation reported that native species including bony bream, perch and Murray cod were among those found floating on the surface and washed ashore on the river banks at Menindee.<br />
&nbsp;</p>


Hundreds of thousands of fish died in outback Australia, with the government blaming the mass death on a toxic algae bloom due to changing weather conditions. It is the second incident of mass fish death along the Darling River at Menindee — around 1000 kilometres west of Sydney — since December, when 10,000 fish died.

Hundreds of thousands of fish died in outback Australia, with the government blaming the mass death on a toxic algae bloom due to changing weather conditions. It is the second incident of mass fish death along the Darling River at Menindee — around 1000 kilometres west of Sydney — since December, when 10,000 fish died. The New South Wales Department of Primary Industries said that a sudden cooling of the temperature over the weekend killed pre-existing algae blooms in the area, resulting in the decomposing algae draining oxygen from the river and killing the fish. The Australian Broadcasting Corporation reported that native species including bony bream, perch and Murray cod were among those found floating on the surface and washed ashore on the river banks at Menindee.

Mass fish death in Australia: Government blames weather change

<p>People in Bangladesh are now eating 30 per cent more fish than they did 20 years ago, but they are getting a smaller amount of important nutrients from it, <a href="http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0175098">a new study shows</a>.</p>

<p>Fish is widely known as a healthy food, rich in protein and other nutrients, so how can this be? Well, it comes down to the types of fish available for people to eat.</p>

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<h5>A combination of overfishing, pollution, and environmental damage has led to significant losses in both quantities of fish (biomass) and the number of fish species (biodiversity) available.</h5>
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<p>In Bangladesh as in many regions in the world, naturally harvested fish, which is known as capture fisheries, <a href="http://www.sciencedirect.com/science/article/pii/S0306919213001632">are faltering</a>. A combination of overfishing, pollution, and environmental damage has led to significant losses in both quantities of fish (biomass) and the number of fish species (biodiversity) available.</p>

<p>The result is that consumption of fish from capture fisheries in Bangladesh <a href="http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0175098">declined by 33 per cent between 1991 and 2010</a>.</p>

<p>This trend is also seen globally. Production from global capture fisheries <a href="http://www.nature.com/articles/ncomms10244">peaked in the 1990s and has since been declining</a> as unsustainable fishing practices continue to worsen. Globally, <a href="http://www.fao.org/3/a-i5555e.pdf">89 per cent of marine fish stocks are&nbsp;either overfished or at maximum capacity</a>.</p>

<p>At the same time, aquaculture or fish farming (known as the &ldquo;<a href="http://www.economist.com/node/1974103">blue revolution</a>&rdquo;) has been rapidly expanding. In fact, it is the fastest growing food production sector globally, with <a href="http://www.fao.org/3/a-i3844e.pdf">average annual growth of 8</a>&nbsp;per cent, and now <a href="http://www.fao.org/3/a-i5555e.pdf">accounts for half of all fish</a> consumed by people around the world.</p>

<p>Since aquaculture was introduced in Bangladesh in the 1980s, the industry has grown rapidly. And the country is now the <a href="http://www.fao.org/3/a-i5555e.pdf">world&rsquo;s sixth largest producer</a> of aquaculture products.</p>

<p>Growth in this sector has more than compensated for declines in the quantity of fish available from capture fisheries, and this is evident in large increases in consumption over time.</p>

<figure class="align-center "><img alt="" src="https://cdn.theconversation.com/files/163785/width754/image-20170404-21976-11ttjp1.JPG" />
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<p><span class="caption">Capture fisheries in Bangladesh are dominated by &lsquo;small indigenous fish&rsquo; that are often consumed whole.</span></p>

<p>But what is not widely known is that the nutritional value of different fish species varies greatly. It turns out that, in Bangladesh, local species from capture fisheries are generally <a href="http://www.sciencedirect.com/science/article/pii/S0889157515000976">much more nutritious</a> than the species being farmed.</p>
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<p>Capture fisheries in the country are <a href="https://www.researchgate.net/publication/286851461_The_diversity_of_cypriniforms_throughout_Bangladesh_Present_status_and_conservation_challenges">dominated by nearly 300 species of &ldquo;small indigenous fish&rdquo;</a>, which are often consumed whole, including head and bones.</p>

<p>Nutrition powerhouses, these small fish are rich sources of important micronutrients including iron, zinc, calcium and vitamin A, as well as high-quality protein.</p>

<p>Aquaculture, on the other hand, is dominated by a <a href="https://drive.google.com/file/d/0B6XjGVIRbmt0OFVpc3gtTTdTTUk/view">handful of large fish species</a>, both indigenous and exotic. Only the flesh of large fish is normally eaten, which is a rich source of high-quality protein, but generally, has lower micronutrient content.</p>

<p>As diets have shifted towards more farmed fish, nutrient intakes from fish have declined. And this has serious implications for <a href="http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0175098#pone.0175098.ref005">a country suffering widespread malnutrition</a>.</p>

<p>Indeed, Bangladesh has among the worst malnutrition rates in the world. More than one in three children under five years of age <a href="http://dhsprogram.com/pubs/pdf/FR311/FR311.pdf">are stunted</a> &ndash; an indicator of chronic malnutrition. And <a href="https://static1.squarespace.com/static/56424f6ce4b0552eb7fdc4e8/t/57490d3159827e39bd4d2314/1464405328062/Bangladesh_NMS_final_report_2011-12.pdf">millions live with various micronutrient deficiencies.</a></p>

<p>This has been estimated to cost the country <a href="https://www.fantaproject.org/sites/default/files/resources/Bangladesh-PROFILES-Costing-June2012.pdf">US$1 billion each year in foregone economic productivity</a>. And that doesn&rsquo;t take into account the cost to the health-care system for treating malnutrition or other social costs.</p>

<p>Malnutrition in its various forms affects nearly every country in the world. Combined with poor diet, it&rsquo;s the <a href="http://ebrary.ifpri.org/utils/getfile/collection/p15738coll2/id/130354/filename/130565.pdf">number one cause of the global burden of disease</a>.</p>

<figure class="align-right "><img alt="" src="https://cdn.theconversation.com/files/164783/width237/image-20170411-31886-1v5hpwv.jpg" />
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<p><span class="caption">While large fish may be rich in protein, they are lacking important micronutrients.</span>&nbsp;</p>

<p>Fish is a nutrient-rich food that can play a more significant role in addressing this global challenge, not only in Bangladesh but in many regions.</p>
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<p>If the <a href="https://sustainabledevelopment.un.org/sdg2">United Nations&rsquo; Sustainable Development Goal of ending malnutrition</a> is to be achieved, the goals of food production systems, including aquaculture, must be realigned to focus on nutrition. And this means diverse food systems that prioritise nutrient-rich foods.</p>

<p>A novel example of such an approach also comes from Bangladesh. Nutrient-rich small fish are produced in aquaculture systems alongside large fish in a <a href="http://pubs.iclarm.net/resource_centre/AAS-2014-06.pdf">practice known as polyculture</a> so that several species are raised in the same pond.</p>

<p>The large fish can be sold for income, while small fish are harvested regularly for household consumption or&nbsp;when in excess, for sale. Farmers are able to increase total yields while also improving the nutritional quality of their production systems.</p>

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<h5>One small fish, known as mola (Amblypharyngodon mola), is an exceptional source of vitamin A, and including it in polyculture systems has been shown to be a cost-effective strategy for alleviating vitamin A deficiency.</h5>
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<p>One small fish, known as mola (Amblypharyngodon mola), is an exceptional source of vitamin A, and including it in polyculture systems <a href="http://www.sciencedirect.com/science/article/pii/S0044848615302325">has been shown</a> to be a cost-effective strategy for alleviating vitamin A deficiency. Despite the evidence, this approach is yet to be widely adopted.</p>

<p>Research confirms that simply producing more food is not the only global challenge. The focus of food production systems, including aquaculture, must move beyond maximising yields to also consider nutritional quality. Otherwise, the world will continue to confront situations like the one in Bangladesh, where malnutrition remains in spite of plenty.</p>

<p>&nbsp;</p>

<p>This article was originally published on <a href="http://theconversation.com">The Conversation</a>. Read the <a href="https://theconversation.com/in-bangladesh-people-are-eating-more-fish-but-getting-less-nutrition-from-it-75458">original article</a>.</p>

<p>&nbsp;</p>


The focus of food production systems, including aquaculture, must move beyond maximising yields to consider nutritional quality too

People in Bangladesh are now eating 30 per cent more fish than they did 20 years ago, but they are getting a smaller amount of important nutrients from it, a new study shows. Fish is widely known as a healthy food, rich in protein and other nutrients, so how can this be? Well, it comes down to the types of fish available for people to eat. A combination of overfishing, pollution, and environmental damage has led to significant losses in both quantities of fish (biomass) and the number of fish species (biodiversity) available. × In Bangladesh as in many regions in the world, naturally harvested fish, which is known as capture fisheries, are faltering. A combination of overfishing, pollution, and environmental damage has led to significant losses in both quantities of fish (biomass) and the number of fish species (biodiversity) available. The result is that consumption of fish from capture fisheries in Bangladesh declined by 33 per cent between 1991 and 2010. This trend is also seen globally. Production from global capture fisheries peaked in the 1990s and has since been declining as unsustainable fishing practices continue to worsen. Globally, 89 per cent of marine fish stocks are either overfished or at maximum capacity. At the same time, aquaculture or fish farming (known as the “blue revolution”) has been rapidly expanding. In fact, it is the fastest growing food production sector globally, with average annual growth of 8 per cent, and now accounts for half of all fish consumed by people around the world. Since aquaculture was introduced in Bangladesh in the 1980s, the industry has grown rapidly. And the country is now the world’s sixth largest producer of aquaculture products. Growth in this sector has more than compensated for declines in the quantity of fish available from capture fisheries, and this is evident in large increases in consumption over time. Capture fisheries in Bangladesh are dominated by ‘small indigenous fish’ that are often consumed whole. But what is not widely known is that the nutritional value of different fish species varies greatly. It turns out that, in Bangladesh, local species from capture fisheries are generally much more nutritious than the species being farmed. Capture fisheries in the country are dominated by nearly 300 species of “small indigenous fish”, which are often consumed whole, including head and bones. Nutrition powerhouses, these small fish are rich sources of important micronutrients including iron, zinc, calcium and vitamin A, as well as high-quality protein. Aquaculture, on the other hand, is dominated by a handful of large fish species, both indigenous and exotic. Only the flesh of large fish is normally eaten, which is a rich source of high-quality protein, but generally, has lower micronutrient content. As diets have shifted towards more farmed fish, nutrient intakes from fish have declined. And this has serious implications for a country suffering widespread malnutrition. Indeed, Bangladesh has among the worst malnutrition rates in the world. More than one in three children under five years of age are stunted – an indicator of chronic malnutrition. And millions live with various micronutrient deficiencies. This has been estimated to cost the country US$1 billion each year in foregone economic productivity. And that doesn’t take into account the cost to the health-care system for treating malnutrition or other social costs. Malnutrition in its various forms affects nearly every country in the world. Combined with poor diet, it’s the number one cause of the global burden of disease. While large fish may be rich in protein, they are lacking important micronutrients. Fish is a nutrient-rich food that can play a more significant role in addressing this global challenge, not only in Bangladesh but in many regions. If the United Nations’ Sustainable Development Goal of ending malnutrition is to be achieved, the goals of food production systems, including aquaculture, must be realigned to focus on nutrition. And this means diverse food systems that prioritise nutrient-rich foods. A novel example of such an approach also comes from Bangladesh. Nutrient-rich small fish are produced in aquaculture systems alongside large fish in a practice known as polyculture so that several species are raised in the same pond. The large fish can be sold for income, while small fish are harvested regularly for household consumption or when in excess, for sale. Farmers are able to increase total yields while also improving the nutritional quality of their production systems. One small fish, known as mola (Amblypharyngodon mola), is an exceptional source of vitamin A, and including it in polyculture systems has been shown to be a cost-effective strategy for alleviating vitamin A deficiency. × One small fish, known as mola (Amblypharyngodon mola), is an exceptional source of vitamin A, and including it in polyculture systems has been shown to be a cost-effective strategy for alleviating vitamin A deficiency. Despite the evidence, this approach is yet to be widely adopted. Research confirms that simply producing more food is not the only global challenge. The focus of food production systems, including aquaculture, must move beyond maximising yields to also consider nutritional quality. Otherwise, the world will continue to confront situations like the one in Bangladesh, where malnutrition remains in spite of plenty. This article was originally published on The Conversation. Read the original article.

In Bangladesh, people are eating more fish but getting less nutrition from it

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