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.
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.
Advanced Aquarist welcomes our newest contributor, Alex Wilson. Alex describes how to quarantine marine-fish by combining hyposalinity and the "Transfer Method II" to prevent the two most common and virulent fish diseases: Ich and flukes.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.