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Study shows corals can be trained to be tougher

Study shows corals can be trained to be tougher

by Leonard Ho last modified Oct 16, 2017 01:38 AM

My colleagues and I just published a new study about the effect of light on bleaching sensitivity in the reef coral Stylophora pistillata. We found that when corals are exposed to higher light levels, they become more tolerant to high water temperatures.

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Innovative Marine's ChaetoMax refugium LED

Innovative Marine's ChaetoMax refugium LED

by Leonard Ho last modified Oct 11, 2017 11:59 PM

Inspired by science and horticultural grow-lights, IM has designed a new refugium light that is optimal for growing chaetomorpha algae in refugiums with a lot of attention paid to a form factor suitable for this particular application.

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An urban aquascape (and a short lesson in creating depth perception)

An urban aquascape (and a short lesson in creating depth perception)

by Leonard Ho last modified Oct 11, 2017 02:01 PM

Yay or nay? Whether or not you are a fan of this unconventional aquascape, you can't deny the aquascaper has skillfully created depth perception using a combination of techniques such as aerial perspective, relative size, and converging parallel lines.

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A new Caribbean snapping shrimp

A new Caribbean snapping shrimp

by Leonard Ho last modified Oct 08, 2017 11:04 PM

Shrimp tanks are popular among freshwater aquarists, but marine aquarists largely view shrimps as afterthoughts. Why? It's not as if coral reefs aren't filled with colorful and interesting shrimps such as this newly described snapping shrimp.

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Further evidence that insects evolved from crustaceans

Further evidence that insects evolved from crustaceans

by Leonard Ho last modified Oct 05, 2017 11:31 PM

Scientists have closely examined the brains of mantis shrimp and discovered a brain structure that was previously only found in insects. The reason why crustaceans and insects resemble each other is increasingly evident: they diverged from the same evolutionary ancestor.

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Lit!  Sascha Hoyer's "Aquascaping Home Studio"

Lit! Sascha Hoyer's "Aquascaping Home Studio"

by Leonard Ho last modified Oct 04, 2017 01:31 AM

We're going to go out on a limb and say your fish room looks nothing like this. Sascha's "Aquascaping Home Studio" is what we all wish our fish rooms could be.

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News flash:  Fish have personalities!

News flash: Fish have personalities!

by Leonard Ho last modified Oct 02, 2017 01:36 AM

Scientists are finding out what aquarists have long known: fishes have very distinct, complex, and stable personalities. All snarkiness aside, it's important for science to test and validate our anecdotal observations.

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Noise makes it hard for fish to school

Noise makes it hard for fish to school

by Leonard Ho last modified Sep 28, 2017 11:34 PM

Marine aquarists have all experienced it: Reef fishes that naturally school simply refuse to in captivity? Common theories are that the lack of predators or the relatively small size of aquariums discourage schooling. A new study finds that noise plays a big role. Noisy water = less cohesive schooling.

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Just a hermit crab taking his coral for a walk

Just a hermit crab taking his coral for a walk

by Leonard Ho last modified Sep 25, 2017 03:59 PM

Heteropsammia sp., otherwise known as "walking corals," can scoot around on the substrate thanks to spaghetti worms that live inside the coral's base. Now a new species of hermit crab has been also found to share this special relationship.

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The right amount of Astaxanthin to raise colorful fish

The right amount of Astaxanthin to raise colorful fish

by Leonard Ho last modified Sep 21, 2017 10:03 PM

What fish eat not only determine how well they grow but also how colorful they become. Research helps us understand the optimum concentration of Astaxanthin (the reddish keto-carotenoid compound) in fish food.

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A new tetra with color-coded sexing

A new tetra with color-coded sexing

by Leonard Ho last modified Sep 20, 2017 12:17 AM

Many tetras are difficult to sex. Often, differentiation comes down to fin lengths, subtle color deviations, or sometimes just the "fullness" of their bellies. But with Hyphessobrycon myrmex, the color between the sexes is unmistakable, and that's a good thing because this species is tiny.

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Gravity-defying suspended reef aquarium!

Gravity-defying suspended reef aquarium!

by Leonard Ho last modified Sep 17, 2017 05:39 PM

George Farmer filmed one of the most amazing reef setup we've ever laid eyes on. This massive reef tank was too heavy for the floors to support, so Ralph had them cantilevered from the ceiling joists!

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Baby fish as young as 8 days old can identify other fish by smell

Baby fish as young as 8 days old can identify other fish by smell

by Leonard Ho last modified Sep 15, 2017 02:07 AM

Researchers have discovered that embryonic clownfish and damselfish are able to differentiate sibling fish with the same parents from babies from different parents and also different species altogether ... all by smell!

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Two new Devario "Giant Danio" species

Two new Devario "Giant Danio" species

by Leonard Ho last modified Sep 12, 2017 11:17 PM

Devario annnataliae and Devario udenii are two new, gorgeous species of Devario danios described from fast-moving freshwater on the island nation of Sri Lanka.

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Hawaii's Supreme Court suspends aquarium fish collection

Hawaii's Supreme Court suspends aquarium fish collection

by Leonard Ho last modified Sep 11, 2017 01:47 PM

Hawaii's Supreme Court has put an injunction on all aquarium fish collection pending an environmental review pursuant of the Hawaii Environmental Policy Act. This effectively means the end of Hawaii fish at fish stores for the foreseeable future.

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Tropical fish can get hooked on opioids, too

Tropical fish can get hooked on opioids, too

by Leonard Ho last modified Sep 06, 2017 06:12 PM

Zebrafish who were exposed to hydrocodone developed fiendish drug-seeking behavior as well as withdrawal when the drug was discontinued.

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How much is GloFish worth?

How much is GloFish worth?

by Leonard Ho last modified Sep 05, 2017 01:14 AM

Yorktown Technologies LP has sold their brand, GloFish to Spectrum Brands for approximately $50 million in cash plus incentives. GloFish are genetically engineered fluorescent "designer" tropical fish that are marketed to aquarists (where legal).

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A better understanding of sex-changing fish

A better understanding of sex-changing fish

by Leonard Ho last modified Sep 01, 2017 12:36 AM

Sequential hermaphroditism is a fairly rare thing ... unless you're a reef fish. From clownfish and damselfish to angelfish and wrasses, a new study explores the dynamics and implications of fish that can change sexes.

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Man guilty of smuggling $1mil worth of illegal live coral

Man guilty of smuggling $1mil worth of illegal live coral

by Leonard Ho last modified Aug 29, 2017 10:20 PM

A Puerto Rican aquarium shop owner pled guilty of two federal Lacey Act felonies for the illicit trafficking of protected ricordea, zoanthid, and anemones over the span of three years with an estimated value of $800,000 to $1,200,000.

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How do reef fish recognize toxic prey?

How do reef fish recognize toxic prey?

by Leonard Ho last modified Aug 28, 2017 12:38 AM

This gaudily colored nudibranch is toxic, and triggerfishes know it. But what markings on this nudibranch signal to fishes it is toxic? It's not what you may think. Here's a hint: Consistency matters.

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