Mithraculus sculptus is a small crab with a carapace longer than it is wide and large chelae (claws). The carapace is flat, shiny and green, finely sculpted, with whitish material adhering to the projections. The chelae are also...

Like starfish, brittle stars are echinoderms but are in the class Ophiuroidea rather than Asteroidea. Brittle stars have five long, skinny arms and a central disk containing a calcium carbonate skeleton and all of their internal organs. As long as...

Orchid Dottybacks are found only in the Red Sea. They’re observed in colonies near vertical walls or ledges, where they dart out to grab a meal from the passing zooplankton, then rush back. In the wild they are found at moderate to deep depths, and...

The Pajama Cardinal is one of the most popular marine aquarium fish, not to be confused with the similar but less-attractive Orbic Cardinal (Sphaeramia orbicularis). ORA is the first hatchery to successfully commercially breed this colorful Cardinal...