Black corals, formally known as Antipatharia, are members of a unique order within the Anthozoa class. These hexacorals are regularly found in the aquarium trade, and are often misidentified as gorgonians. In this article, we discuss the biology of black corals, and offer some suggestions for aquarium husbandry.
All reefkeepers know about the live-sustaining relationship between coral and their symbiotic algae. However, few of us understand how to care and feed zooxanthallae. Dana Riddle examines this topic in depth.
Proposed listing of the Percula clownfish (Amphiprion percula) under the U.S. Endangered Species Act: What it means, and what aquarists need to know (Part 2)
Chris Jury concludes his two part article by exploring each of the threat factors (including additional data as well as NMFS' response) presented in the petition to list Percula clownfish under the ESA.
Proposed listing of the Percula clownfish (Amphiprion percula) under the U.S. Endangered Species Act: What it means, and what aquarists need to know (Part 1)
In part 1 of a two part series, Chris Jury of the Hawai'i Institute of Marine Biology explains in great detail what every aquarist needs to know about the proposed listing of percula clownfish under the Endangered Species Act.
Here's a look at my 125 gallon mixed-reef aquarium. It's not the biggest, fanciest, most colorful, high-tech reef aquarium for sure, but I'm proud of it and want to share what's in it, how it works, and how I take care of it. The details will come, but for now I want to point out that there are several things about it that could be considered unusual by many hobbyists' standards, too.
Product Review: Products for 'Rapid Cycling' of Marine Aquaria: Brightwell Aquatics' MicroBacter7 and Continuum Aquatics' BacterGen.M
Two products were tested under controlled conditions for their abilities to consume/convert carbon and nitrogen-based compounds (referred to as "cycling" by many hobbyists.) Results suggest that, at dosages recommended by the manufacturers, these products contain sufficient numbers of carbon-cycling bacteria to properly inoculate biochemical oxygen demand tests, and ammonia-oxidizing bacteria are present in numbers that can "seed" a sterile environment, and perhaps hasten the aerobic portion of the nitrogen cycle along by a few days when used as a supplement to conventional seeding via live rock, live sand, and hardy "starter" fishes. Potential problems with over-dosing are also discussed.
Dr. Jafarey, staff veterinarian at the Toledo Zoo, answers why an aquarist may experience massive fish die-off with symptoms of swollen eyes and abnormal buoyancy.
Are reefkeepers striving for the right levels of pH, alkalinity, and calcium? Using PAM fluorometry, Christie D. Raji studies the effects of high and low levels of each of these parameters on hermatypic corals in a captive environment.
When aquarist think about reef animals, cerianthids usually don't come to mind. However, tube anemones are some of the most beautiful, hardy, and long-lived organisms for captive aquariums, and they're not as dangerous to tankmates as many believe.
With their long wiry arms and exotic colors, Ophiuroids are some of the reef's most beautiful and intricate creatures. James Fatherree describes the general information and aquarium husbandry of this amazing class of echinoderms.
Richard Aspinall explores the Yasawa Islands of Fiji. He shares his amazing experience of a coral reef island teeming with vibrant, beautiful life above and below the sea.
Dana Riddle studies zooxanthallae exposed to varying intensities and colors of LEDs between 365nm (UV-A) and 657nm (red). The collected data sheds light on how different spectra affect photosynthesis and the Xanthophyll Cycle, helping us to better understand how corals use and respond to light.
Dana takes a detailed look at Tunze Turbelle Stream pumps from a more useful velocity metric instead of the ubiquitous gallons-per-hour metric our hobby has become accustomed to. Water velocity may be the key to certain corals' success.
Every educated aquarist knows about the nitrogen cycle, but how much do you really know about the nitrogen cycle? Advanced Aquarist welcomes our newest writer, Tommy Dornhoffer, who revisits the nitrogen cycle in marine aquaria in all its intricate and dynamic glory.
Last year, Dmitry Karpenko and Vahe Ganapetyan explored the science of light in the reef aquaria. They apply their previous work in this new paper explaining the theory and process of building a DIY LED fixture.