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By admin - Posted Oct 26, 2009 09:10 PM

"Dead" fish comes back alive while being flushed

We've all made mistakes with the care of our fish, but this fishkeeper may take the prize for the most successive number of tragic errors. And she recorded the entire ordeal.

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Let's talk about sponge filters

No; not that kind of sponge filter. I want to talk about living sponges. These sedentary animals may look passive, but they are anything but. Their active water pumping mechanism is really impressive.

sponge_feed.gifMost of us know that sponges are filter feeders, but some of us (and a large portion of the general public) think of sponges as passive organisms that essentially soak up food like, well, a sponge.  Nothing could be further from the truth!

Sponges actively pump water through their osculums (AKA "little mouths") by using an army of tiny flagella (threadlike appendages) flapping like microscopic madmen to push water through the sponges' chambers.

The drawing to the right by the Marine Education Society of Australasia shows how this mechanism works.  And the video below shows how efficiently sponges can process large volumes of water through their systems. 

A new species of tiny goby that lives in tunicates

A new species of tiny goby that lives in tunicates

Lubricogobius tunicatus

Lubricogobius tunicatus is a new Indo-Pacific dwarf goby (mature size of about 0.4"/1cm) that lives inside the oral or incurrent siphons of tunicates – just another fascinating symbiosis found on reefs.

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Mediterranean sun corals have an interesting method of reproduction

Mediterranean sun corals have an interesting method of reproduction

Tentacles doubling as baby chutes!

About three quarters of coral species broadcast spawn (eggs and sperm) into the water for external fertilization. Fewer corals fertilize internally, brooding "baby corals" (scientists call these planulae) before "giving birth." Mediterranean sun corals are one such coral, and their way of giving birth is even more rare and weird.

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Why fish send red signals in the deep blue sea

Some of us think that reef fish can't see the color red because red light is quickly filtered out by seawater. But then why are so many reef fish fluorescence red? Studies are showing that reef fish not only see red, but the color serves very different purposes for different fish.

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Polyp fetish? We've got the video for you

Dr. Tim Wijgerde has been perfecting his time-lapse photography. His latest 4K video reveals the slow motion of lovely Acropora polyps. Old timers will remember the days when Acropora were considered impossible to keep in captivity. Oh, how times have changed.

Two new reef goby species

Two new reef goby species

Amblygobius cheraphilus (G.R. Allen)

Amblygobius calvatus and Amblygobius cheraphilus are the two newest species of burrowing gobies from the tropical western Pacific Ocean. They exist in shallow water but are skittish and have evaded discovery until now.

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Magnificent "room divider" reef tank

I can't think of a more wonderful way to divide two rooms; both the kitchen and the dining table share view of this incredible reef aquarium.

You may remember having seen this aquarium.  We shared it in 2015, almost an year ago to this day.  It has since matured splendidly.  The open aquascape has filled in in all the right places.  Bravo!

https://www.youtube.com/watch?v=lX0Hb2Kszrs

The world's most expensive betta fish?

The world's most expensive betta fish?

This betta sold for an incredible $1500USD. Photo via Kachen Worachai's Facebook page.

The winning bid on a Facebook auction for a betta fish pigmented like Thailand's national flag ended at a whooping 53,500 baht (~$1,500 USD)! As far as we are aware, this makes it the most expensive betta fish in the world.

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Angler frogfish have neon-glow worm lures

Angler frogfish have neon-glow worm lures

(b) Antennarius striatus under blue light. (c) Fluorescencing worm swimming next to the frogfish.

You likely know about the wiggly lures some frogfish use to entice prey to come within striking distance so the frogfish can easily ambush them. It turns out the lures of Antennarius striatus glow under actinic lighting, further enhancing their deadly seduction.

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One new dwarf goby described, another redescribed

One new dwarf goby described, another redescribed

Eviota flebilis. Photo by T. Suzuki.

David Greenfield and Toshiyuki Suzuki describes a new species of dwarf goby, Eviota bilunula. They also redescribe Eviota flebilis based on new specimens found of this elusive species.

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Mass spawning of 2800 transplanted Acropora

Mass spawning of 2800 transplanted Acropora

Synchronous spawning of outplanted Acropora tenuis.

W00T! Researchers report a large-scale synchronous spawning of ~2800 colonies of outplanted Acropora tenuis in Okinawa, Japan. This is a different method of reef restoration than what many of us are familiar with - one which promotes genetic diversity through natural reproduction.

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Another mesmerizing 4K time lapse video

Dr. Tim Wijgerde is getting *really* good at his time lapse photography. Part 3 of his series feature the mesmerizing slow dance of corallimorpharians, elegance corals, blastomussas, starfish, tubeworms, SPS, zoanthids, and more.

https://www.youtube.com/watch?v=tnbMyQda2RM

This video shows marine life in time lapse and stunning 4K quality. Witness the revealed behavior of stony corals, soft corals, zoanthids, starfish, corallimorpharians and tube worms!

This footage was produced from about 5,500 24 Megapixel photographs, shot with a Nikon D610 equipped with a 60 mm Nikkor macro lens.

Another pleco described as a new species: Panaqolus tankei

Another pleco described as a new species: Panaqolus tankei

Panaqolus tankei from the region of Vitória do Xingu (live aquarium specimen; photo by R. Heidemann

L398 is now officially recognized as Panaqolus tankei. We are witnessing a golden era in fish taxonomy thanks to technology, modern research techniques, and the cooperation between aquarists and the scientific community.

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Would you "keep" a realistic robotic fish?

Would you "keep" a realistic robotic fish?

The Miro-9 in blue (on display stand)

South Korean tech company AIRO is manufacturing one of the most realistic robotic fish currently on the market. The MIRO is an advanced submersible robot that mirrors both the look and movement of fish.

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