Moon jellyfish

Moon jellyfish

Aurelia aurita. At the Pittsburgh Zoo and PPG Aquarium in Pittsburgh, PA.

I always see moon jellies displayed in blue light, not green or other colors. I’m assuming it’s closer to ultraviolet and they glow better, but I’m wondering if they’d glow just as well in other colors, like acrylic sheets do.

Happy porcupine puffer


Diodon holocanthus, also known as a globefish or balloonfish. I don’t know if he’s really happy, but he looks it. In the PPG Aquarium at the Pittsburgh Zoo in Pittsburgh, PA.

Pittsburgh penguins

King penguins (<i>Aptenodytes patagonicus</i>) and macaroni penguins (<i>Eudyptes chrysolophus</i>) in the PPG Aquarium at the Pittsburgh Zoo in Pittsburgh, PA.

Bala shark


Balantiocheilos melanopterus
, also known as the tricolor shark, silver shark, or shark minnow. Not a true shark, but a small endangered tropical fish sometimes used in home and office aquariums.

At the PPG Aquarium at the Pittsburgh Zoo in Pittsburgh, PA.