The Fire Urchin, Variable Fire Urchin – Asthenosoma varium is a striking and intriguing species of sea urchin belonging to the family Echinothuriidae. Its vibrant colors and unique features make it a captivating sight in the underwater world, but its name warns of the potential danger it poses.
Description & Characteristics
The Asthenosoma varium is characterized by its distinctive, often variable coloration. Its body can display a range of hues, including red, orange, yellow, and brown, sometimes even exhibiting a mottled pattern. The spines, which cover the body like a protective armor, are long and sharp, adding to its formidable appearance. These spines are often tipped with a venomous substance, a defense mechanism used to ward off predators. The Fire Urchin, Variable Fire Urchin can grow to a maximum size of approximately 15 cm in diameter.
Habitat and Occurrence
The Fire Urchin, Variable Fire Urchin – Asthenosoma varium is commonly found in the Indo-Pacific region, inhabiting a variety of marine environments. It’s a typical resident of coral reefs, rocky shores, and seagrass meadows. Asthenosoma varium thrives in depths ranging from shallow intertidal zones to deeper waters, typically at depths of 10 to 50 meters. Its presence is particularly noteworthy in tropical and subtropical waters.
Taxonomy
The Fire Urchin, Variable Fire Urchin – Asthenosoma varium is scientifically classified within the Class: Echinoidea, Order: Echinothurioida, and Family: Echinothuriidae. This family includes several other species of sea urchins, known for their distinct characteristics and adaptations to different marine environments.
Feeding
The Fire Urchin, Variable Fire Urchin – Asthenosoma varium is an omnivorous feeder, consuming a diverse range of food sources. Its diet includes algae, dandelion, lettuce, mysis shrimp, and smelts. This varied dietary preference allows it to adapt to different food availabilities within its habitat.
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