Ferdina

Ferdina is a genus of sea stars belonging to the family Asterinidae. It is characterized by its small size, typically less than 5 centimeters in diameter, and its five-rayed star-shaped body. The genus encompasses several species found in the Indo-Pacific region, including the popular aquarium species Ferdina pulchella, also known as the “Orange-striped Starfish”.

Ferdina sadhaensis

Common Names

Members of the Ferdina genus are known by various common names, including:

  • Orange-striped Starfish (Ferdina pulchella)
  • Dwarf Starfish (Ferdina spp.)
  • Asterinid Starfish (Ferdina spp.)

Characteristics

Ferdina sea stars possess the following characteristics:

  • Size: Typically small, with a diameter ranging from 2 to 5 centimeters.
  • Body Shape: Five-rayed star-shaped body, often with a slightly inflated central disk.
  • Coloration: Varies depending on the species, ranging from bright orange and red to brown and gray. Some species exhibit distinct patterns, such as stripes or spots.
  • Arms: Short, thick arms with a rounded tip.
  • Skin: Granular and rough to the touch.
  • Tube Feet: Numerous tube feet on the underside of the arms, used for locomotion and feeding.

Environments

Ferdina species are typically found in shallow, tropical waters, inhabiting coral reefs, rocky shores, and sandy substrates. They are often associated with macroalgae and other invertebrates, where they feed on small organisms and detritus. Some species, like Ferdina pulchella, are popular aquarium inhabitants, valued for their vibrant colors and small size.

References

For more information, please refer to the following resources: