Common name: Spanish dancer

General information

The Spanish Dancer, scientifically known as Hexabranchus sanguineus, is a large and colorful nudibranch, a type of sea slug. This species is renowned for its vibrant red and white coloration and its graceful, undulating swimming motion that resembles a flamenco dancer's dress, hence the name 'Spanish Dancer'. They are nocturnal creatures and are often found in the Indo-Pacific region.

Care

Spanish Dancers require a specialized aquarium setup due to their specific dietary needs. They feed primarily on sponges, which must be available in the tank for them to survive. The aquarium should also provide plenty of hiding spots and a stable environment with excellent water quality. Due to their size, a larger tank is recommended.

Reproduction

Hexabranchus sanguineus is a hermaphrodite, meaning each individual possesses both male and female reproductive organs. They can lay long ribbons of eggs, which are often seen attached to the substrate or aquarium glass. The larvae are planktonic before settling down and developing into adults.

Symbiosis

While not known for a specific symbiotic relationship like clownfish and anemones, Spanish Dancers can sometimes be seen with commensal shrimp riding on them. These shrimp benefit from the transportation and the food scraps left by the nudibranch without harming their host.

Habitat

Spanish Dancers are typically found in tropical and subtropical waters, often in coral reef environments. They prefer sheltered areas with an abundance of sponges and can be found at depths ranging from shallow waters to about 50 meters deep.