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New Lamp Clamp Fixtures from Coral Compulsion Are Simple, Affordable Solution to Illuminate Your Reef

 When it comes to aquarium illumination, hobbyists are often left with a tough choice for mounting their lights. On one hand, you can go the route of style and aesthetics, beig left with a difficult install from the ceiling or some sort of hanging hardware. On the other, you can use unsightly tank brackets that are simple to incorporate, but really detract from the overall look of the setup. Fortunately, lighting hardware producers have started to get smart and make gooseneck brackets, which are both simple and stylish, and the latest Lamp Clamp from Coral Compulsion is no different. The suitably called Lamp Clamp is a very simple, elegant way to illuminate your marine aquarium. It has a power cord, power switch, and socket built right in, giving new life to the Par30 and Par38 form factor LED lamps that have sort of waned in popularity over recent years. The Lamp Clamp has a flexible arm that is coated in vinyl to give added protection against corrosion. It holds up to 2lbs worth of LED goodness and an acrylic mounting clamp with nylon screws holds it securely to aquariums up to 1″ thick. Besides being an incredibly simple light source, the Coral Compulsion Lamp Clamp is also very affordale at only $39.99. It is available in both black and white versions, and comes with a 90-day warranty. MORE: New Lamp Clamp Fixtures from Coral Compulsion Are Simple, Affordable Solution to Illuminate Your Reef

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Seagrass Growth May Limit Reef-Eroding Acidification


We’ve heard a lot lately about how carbon dioxide emissions are contributing to global warming, which is ravaging (among other habitats) tropical coral reefs. Over the last 40 years, a secondary (though equally potent) carbon-related threat to coral reefs has emerged: ocean acidification. Excess atmospheric carbon dissolves into seawater to form carbonic acid. In sufficient quantities, this acid can erode coral skeleton much in the same way that soda can damage teeth. Seagrasses, on the other hand, may thrive in these conditions. Seagrass meadows are highly productive environments where photosynthesis can take place at such a rate that carbon dioxide is practically stripped from the water, dissolved oxygen is generated so rapidly that it bubbles off, and the outlying waters are rendered perfectly alkaline. Thus, it would seem that coral reefs that are situated near large seagrass beds are afforded with some measure of protection from acidification. Swansea University marine biologist Dr Richard Unsworth set out to study this relationship with colleagues from Oxford University and James Cook University in Australia. In a paper published in Open Access Environmental Research Letters, Unsworth and his team describe the growing dependence of corals upon seagrasses, warn that damage to seagrass environments ultimately damages coral reefs, and finally propose that seagrasses may similarly depend upon healthy reefs. More information about this study can be found at:
http://news.bioscholar.com/2012/06/seagrass-could-help-cut-acidity-level-in-water-surrounding-coral-reefs.html.

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Giesemann Updates Matrixx T5HO with Stylish New Look

 When it comes to stylishly functional lighting, there are few that hold a candle to Giesemann. They’ve introduced some of the best looking light fixtures that the aquarium industry has seen, and in recent years they’ve only added to their allure with products like the Teszla and Futura LED. In keeping with the same styling cues that made those too fixtures so darn beautiful to look at, Giesemann has revamped their Matrixx T5HO fixture, giving it a very similar look. Appropriately dubbed the Matrixx-II, this T5HO fixtures has a body made of heavy duty extruded and formed aluminum alloy that comes either coated in an anti-corrosion anodized silver finish or painted in a high gloss white. But the corrosion protection doesn’t stop just there. Each item that makes up the outer body of the light fixture (e.g. all joints, faces, internal faces, etc.) receive the same treatment and are either anodized or painted prior to the production of the fixture. While still on the topic of the fixture’s externals, a rather snazzy looking glass panel adorns the top of the Matrixx-II and, as we sort of mentioned, the bodywork is borrowed directly from Giesemann’s flagship LED fixtures, the Futura LED. Getting into the internals, the Matrixx-II doesn’t MORE: Giesemann Updates Matrixx T5HO with Stylish New Look

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Fish Found to Cooperatively Hunt in Amazing Ways

 Groupers are obviously fearsome predators. They are enormous, with huge mouths and huge stomachs. They can also reach incredible burst speeds when lunging at prey. However, if they are unsuccessful in an ambush, the would-be prey item usually outruns its pursuer, slipping away fairly easily into the cover of the reef. Still, in many cases, that is not the end of the chase. Using a hunting tactic recently described in the journal Nature Communications, certain groupers and coral trouts use a form of sign language to elicit the help of other predators. By observing groupers in the wild, researchers discovered that rather than give up, these fish often generate a “headstand signal” by shaking their bodies while pointed in the direction of the hidden prey item. Eels (which can slither after prey into small areas) and certain wrasses (which can force themselves upon prey with their crushing, protruding jaws) understand this gesture well, and quickly employ their own skills to obtain the quarry. Similarly, coral trout are known to elicit the aid of certain species of octopus. Researchers define the behavior of these groupers as a “referential gesture” because (1) it draws attention to some object, (2) it is not necessary for normal movement or orientation, (3) it is suggestive of some intent, and (4) it elicits a specific, voluntary response from a partner. More information about this study can be found at:
http://www.livescience.com/29120-fish-use-sign-language-to-hunt.html.

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Marine Breeder’s Workshop 2013

 You’ve seen the black shirts…this is what it’s all about. Workshop Preview by Tal Sweet Since 2010 the Marine Breeder’s Workshop has been at the forefront of captive breeding events in North America. The Workshop is part of the Marine Breeding Initiative (MBI, www.mbisite.org) and was created to bring some of the biggest names in marine ornamental fish and invertebrate captive breeding together in one place to speak about various topics related to captive breeding. MBI participants attending the workshop might be recognized for personal breeding accomplishments. The concept of the Workshop is to provide attendees with the latest information and plenty of time to interact with the speakers and other breeders in an intimate setting. MORE: Marine Breeder’s Workshop 2013

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Reef Threads Podcast #132

Layered caps. It’s Reef Threads podcast time once again. This time around we talk about Chicago Field Museum research, snake-oil products, leafy sea dragons, pico tanks, LEDs, and reefkeeping’s pinnacle. Download the podcast here, or subscribe to our podcasts at iTunes. Also, follow us on Twitter at reefthreads.—Christine and Gary

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Weather Channel Compiles List of “10 Most Amazing Coral Reefs”


We all dream of sunny beaches—lined with lush stands of palm trees, alive with the chatter of flamboyantly-feathered birds and surrounded by warm, clear waters teeming with vibrant fishes. Whether we have actually been there or not, we are quite familiar with every detail of the archetypical island paradise down to the stiff, tropical drink. That notwithstanding, the tropical marine stretches of the world—and the countless coral reef habitats that are often found there—are each truly unique. The Weather Channel recently reflected upon some of the particularities of these diverse environments, and provided a list of the top ten areas it deemed to be the most spectacular. Of course, one person’s utopia is another’s eleventh choice, or worse. Though Australia’s Great Barrier Reef topped this list, a similar list recently published by travel guide Lonely Planet excluded the much-famed structure altogether (albeit to much resulting protest). Continue reading

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GHL Mitras Simu-Sticks Now Available to Pre-order

 GHL has been pretty busy in recent months with the release of their Mitras LX 6200 HV and Mitras Full Spectrum LED strips, but they still have one more cat in the bag that’s ready to be unleashed. Their new Mitras powered Simu-Sticks are another set of strip lights that function really nicely with the ProfiLux line of aquarium controllers, but instead of being the primary light source like the other two fixtures, the new Simu-Sticks are meant to be supplemental lighting. GHL is primarily marketing them as supplements to T5HO lighting, most like due to the shimmering effect that the LEDs provide, and as of just a couple of days ago, they have officially been made available to pre-order. The GHL Simu-Sticks will come in two lenghts, 21.5″ and 37.5″, and are designed to help create sunrise and sunset effects, moon phase lighting, and even weather patterns. In typical Mitras fashion, the Simu-Sticks are loaded to the brim with multiple colors, as least as far as strip lights go. They have 4 separately dimmable light channels that include neutral white, red, green, and blue LEDs. To take advantage of the dimmability of these LED strips, they must be hooked up to a ProfiLux and ManuDimm controller. Without the controller, the strips will run at 100% on all channels. The strips are made from an anodized aluminum body with cooling fins, and adjustable mounting brackets give you some flexibility with mounting them. The strips are waterproof, and the LEDs are sourced from Samsung type 5060 emitters. A total of four Simu-Strips can be controlled simultaneously through a single driver, though all four will operate at the same settings. As far as pricing goes, one 21.5″ Simu-Stick and one driver will set you back $149. The price jumps to $169 for the longer version, and if you want just the strips themselves without the diver, they run $59 and $89 respectively. MORE: GHL Mitras Simu-Sticks Now Available to Pre-order

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Male Seeking Mate: Must Want Kids – Quest to save Ptychochromis insolitus

 Male of the critically endangered Mangarahara Cichlid, Ptyochromis insolitus. Image: ZSL The old dating saying about there being “plenty of fish in the sea” is not holding true for the critically endangered Mangarahara Cichlid, whose known worldwide population is down to two lone specimens surviving in captivity in the UK. Aquarists at ZSL London Zoo are launching an urgent worldwide appeal to find a female mate for the last remaining males of a critically endangered fish species. The Mangarahara Cichlid (Ptychochromis insolitus) is believed to be extinct in the wild, due to the introduction of dams drying up its habitat of the Mangarahara River in Madagascar, and two of the last known individuals, unfortunately both male, are residing in ZSL London Zoo’s Aquarium. MORE: Male Seeking Mate: Must Want Kids – Quest to save Ptychochromis insolitus

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Study Attempts to Determine Global Temperature Restriction Needed to Save Coral Reefs


Shallow-water coral reefs are presently under very serious threat from the effects of global warming. This threat has been building since the beginning of the Industrial Revolution. However, if bold action is not taken soon, these rich, productive ecosystems will almost certainly be all but erased from the Earth within decades. A recent paper published in Geophysical Research Letters suggests that restricting greenhouse warming to 3.0 W/m² is necessary to halt an immanent and likely catastrophic loss of coral reef habitat. This would require that atmospheric carbon dioxide concentrations not exceed 50 to 100 ppm, which is roughly half again the increase that has taken place since (and almost certainly because of) the Industrial Revolution. Researcher Elena Couce and her colleagues used mathematical models to test their theory that global temperatures could be restricted by way of human intervention in the form of geoengineering. The study does not provide a detailed means by which the entire planet’s climate could be controlled by a switch; it however does conclude that it would be possible to conserve reefs in this manner, if this kind of geoengineering itself was to become possible. The study points out some obvious dangers to such an ambitious approach. Firstly, their models predicted that geoengineering could potentially overcool the Earth and its coral reefs. Also, this type of temperature control alone would do nothing to stop ocean acidification. It might seem like mere science fiction that humans would ever attempt to manipulate global temperatures in this way. Undoubtedly, such desperate measures would only be taken in a very, very desperate situation that one could only hope never arises. All the same, unless the relatively smaller challenge of developing clean energy sources is finally overcome, corals, humans, and perhaps all life on Earth can only look forward to a grimmer and grimmer future. Learn more about this study at:
http://www.sciencedaily.com/releases/2013/05/130514112858.htm.

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Peacock Flounder, Bothus lunatus, Flounders

 Hi gang, we had a super busy day here at Substation-Curacao yesterday with collage kids from Wilmington and folks that just wanted to go down in the sub. One of my main jobs here is to follow the sub out onto the reef and photograph who ever happens to be inside at the time and send them home with these super cool underwater photos. Most of the time the sub meets me at around 50 feet, I then take a bunch of shots and usually follow them down to around 100. We use an old Nikon D-200 in an IKELITE housing with double strobes for these shots and a D-800 for all the specimen shots and video. While out there yesterday I came across this very hidden Peacock Flounder as you see above, look how well he blends in!! Like so many fish and creatures here in the Caribbean these flounders have the art of disguise down to an art, it’s really amazing! I can’t even tell you how many times I have seen friends and divers swim right over these fish and never spot them and the cool thing is the flounders won’t move unless they are sure they have been spotted. The peacock flounder is also called flowery flounder because it is covered in superficially flower-like bluish spots. As suggested by the family name, lefteye flounders have both eyes on top of the left hand side of their heads. The eyes are raised up on short stumps like radar dishes, and can move in any direction independent of each other. That feature provides flounders with a wide range of view. One eye can look forward while the other looks backward at the same time. The baby flounders have one eye on each side of their bodies like ordinary fish, and swim like other fishes do, but later on, as they are becoming adult, the right eye moves to the left side, and flounders start to swim sideways, which gives them the ability to settle down flat on the bottom. The maximum length of this flounder is about 45 centimetres (18 in). Peacock flounders are mostly found in shallow water on sandy bottoms. Sometimes they rest over piles of dead corals or bare rock. They may be found as deep as 150 meters (490 ft). As most flounders, the peacock flounder is mainly nocturnal,but is sometimes also active during the day. It hunts for small fishes, crabs and shrimps. Like all flounders, peacock flounders are masters of camouflage. They use cryptic coloration to avoid being detected by both prey and predators. Whenever possible rather than swim they crawl on their fins along the bottom while constantly changing colors and patterns. In a study, peacock flounders demonstrated the ability to change colors in just eight seconds. They were even able to match the pattern of a checkerboard they were placed on. The changing of the colors is an extremely complex and not well understood process. It involves the flounder’s vision and hormones. The flounders match the colors of the surface by releasing different pigments to the surface of the skin cells while leaving some of the cells white by suppressing those pigments. If one of the flounder’s eyes is damaged or covered by sand, the flounders have difficulties in matching their colors to their surroundings. Whenever hunting or hiding from predators, the flounders bury themselves into the sand leaving only the eyes protruding. I found another new Gecko yesterday at my house and got him photographed at work. After that I took him back out to the desert and released him or her back into the wild. Have a great day, Barry MORE: Peacock Flounder, Bothus lunatus, Flounders

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Coral Symbionts Found to Act as Food Banks


It is easy to liken coral reefs to tropical rainforests; much like these remarkable terrestrial biological hotspots, coral reef habitats are widely held in awe on account of their astounding abundance and diversity. That notwithstanding, coral reefs can just as easily be thought of as marine deserts. While we may think of the warm, crystal clear waters of the coral reef as exceedingly hospitable, they are in fact located in some of the most nutrient-poor areas to be found in the oceans. Nutrients are indeed so scarce in coral reef ecosystems that they are a key factor in the competitive interaction between corals. The bulk of these nutrients cannot be scavenged by the coral itself; rather, they are assimilated and processed by symbiotic algae that dwell within the coral’s tissue. Consequently, corals must act as the very best host they can be. Corals engage in an unending race to outgrow each other in their drive to fully expose themselves to photosynthesis-fueling sunlight. If any environmental condition throws a wrench in the process of photosynthesis, the algae—and ultimately its host—face the threat death by starvation. Continue reading

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