Achilles Tang

Scientists have found the existence of two types of males of a fiercely invasive fish spreading through the Great Lakes, which may provide answers as to how they rapidly reproduce. View the full article

It is vitally important that we supply our critters with water that is constantly well oxygenated through aeration and or circulation. View the full article

Aquarists working with fish from this region are quickly struck with how similar some species from West Africa are to those from other regions, such as the tropical Western Atlantic and the Mediterranean. View the full article

This article reviews the new series of electronic ballasts recently introduced by Lumatek, Sunlight Supply - Galaxy Electronic Ballasts, and Proline's Vertex electronic ballasts. View the full article

In this article, we'll compare some physical parameters of various types of reef biotopes to those observed in a small aquarium. How does the stability of this 140 gallon system stack up to various natural environments? What are the long term effects of the varying conditions seen in an aquarium? View the full article

Terry discusses his time at the Manhattan Reefs Frag Swap. View the full article

The zebra mussels that have wreaked ecological havoc on the Great Lakes are harder to find these days -- not because they are dying off, but because they are being replaced by a cousin, the quagga mussel. But zebra mussels still dominate in fast-moving streams and rivers. View the full article

Steelhead trout that are originally bred in hatcheries are so genetically impaired that, even if they survive and reproduce in the wild, their offspring will also be significantly less successful at reproducing, according to a new study. View the full article

Coral reefs throughout the Caribbean have been comprehensively "flattened" over the last 40 years, according to a disturbing new study. View the full article

Using a system of underwater hydrophones that can record sounds from hundreds of miles away, scientists have documented the presence of endangered North Atlantic right whales in an area they were thought to be locally extinct. View the full article

Early action could be crucial to addressing the problem of major increases in jellyfish numbers, which appears to be the result of human activities. New research presents convincing evidence that this "jellyfish joyride" is associated with over-fishing and excess nutrients from fertilizers and sewage. View the full article

A comprehensive investigation into the axial complex of sea urchins has shown that within that group of marine invertebrates there exists a structural evolutionary interdependence of various internal organs. The research demonstrates that the approach of combining all structural data available on a given organ in combination with a broad taxonomic coverage can yield novel insights into the evolution of internal organ systems. View the full article

Sharktooth Hill near Bakersfield, Calif., is the home of the most extensive marine bone bed in the world, a 100-square-mile layer of shark, seal, ray, whale, turtle and fish bones. Researchers have analyzed the 15-million-year-old fossils to decipher the history of what used to be the California coastline, reconstructing a 700,000-year period of warming climate and teaming sea life. View the full article

Scientists have launched an unmanned aircraft to mount the vehicle's first search for ice seals at the southern edge of the Bering Sea pack ice during the Arctic spring, in an effort to learn more about these remotely located species. View the full article

The skeleton of a whale that died around 10,000 years ago has been found in connection with the extension of the E6 motorway in Strömstad. The whale bones are now being examined by researchers who, among other things, want to ascertain whether the find is the mystical "Swedenborg whale". View the full article

New research shows that when two species of stickleback fish evolved and lost their pelvises and body armor, the changes were caused by different genes in each species. That surprised researchers, who expected the same genes would control the same changes in both related fish. The findings shed new light on how evolution produces diversity in nature, and on the evolution of limb loss. View the full article

Weak enforcement combined with fishermen facing serious economic hardships are leading to widespread violations of fisheries regulations along the Northeastern United States coast. This pattern of noncompliance threatens the success of new fisheries management measures put in place to protect and restore fish stocks, according to a new study. View the full article

Using the zebrafish as an animal model, researchers have discovered that the body uses hydrogen peroxide to sound the alarm when a tissue has been injured. As a direct result of this hydrogen-peroxide red alert, white blood cells come to the aid of the wounded site. View the full article

Exposure to estrogen reduces production of immune-related proteins in fish. This suggests that certain compounds, known as endocrine disruptors, may make fish more susceptible to disease. The research may provide new clues for why intersex fish, fish kills and fish lesions often occur together in the Shenandoah and Potomac rivers. View the full article

What's the secret to surviving during times of environmental change? Evolve... quickly. A new article finds that guppy populations introduced into new habitats developed new and advantageous traits in just a few years. This is one of only a few studies to look at adaptation and survival in a wild population. View the full article

Penguin poo (guano) stains, visible from space, have helped British scientists locate emperor penguin breeding colonies in Antarctica. Knowing their location provides a baseline for monitoring their response to environmental change. View the full article

The sea floor is strewn with raw materials that could be very important in the future: Manganese and iron, but also rarer and more precious elements such as cobalt, copper, zinc and nickel, are present in great quantities in the form of deep-sea nodules and crusts. View the full article

Elevated water temperatures and heightened concentrations of carbon dioxide can dramatically increase the growth rate of a keystone species of sea star, according to new research. View the full article

There's little doubt that coral reefs the world over face threats on many fronts: pollution, diseases, destructive fishing practices and warming oceans. But reefs appear to be more resistant to one potential menace -- seaweed -- than previously thought, according to marine scientists. View the full article

Ocean acidification, a direct result of increased carbon dioxide emission, is set to change the Earth's marine ecosystems forever and may have a direct impact on our economy, resulting in substantial revenue declines and job losses. View the full article