But the best aquarium pets that aren’t fish prove that our finned friends aren't the only additions that can thrive in a tank. From African Dwarf frogs and Red-clawed Crabs to Male Painted ...

Filled with live plants, substrates, and glimmering schools of fish, a perfectly curated aquarium is an awe-inspiring art ...

What is a Japanese spider crab? They may look like something from a 1950s sci-fi film, but Japanese spider crabs are gentle giants. And giants they are. Of the 60,000 species of crustaceans on ...

Brown crabs find underwater power cables "difficult ... The researchers used the marine station's purpose-built aquarium laboratory for the experiment. Kevin Scott at St Abbs Marine Station ...

This story appears in the August 2016 issue of National Geographic magazine. All around her, guys wave seductively, beckoning her to their beach homes. How will the female fiddler crab pick a mate?

Why it's awesome: Northern sea robins are weird fish with big, spiny heads; bright-blue eyes; two giant wing fins; and six crab-like legs. It's these little legs that make sea robins so unusual.

The St. Lucie County Aquarium in Fort Pierce houses the Smithsonian Marine Ecosystems Exhibit featuring six tanks displaying ...

Avoid putting gravel or wood shavings in the tank. Instead, add sand, fiber bedding, or crushed coral. Hermit crabs prefer sand because they can burrow down in it. Playground sand from home ...