Datasheet

General Description:

The Spanish Dancer (Hexabranchus sanguineus) is a striking marine gastropod mollusk known for its vibrant colors and large size. This nudibranch lacks eyes but uses tentacles on its head for sensory purposes, especially for locating food and other individuals of its species. Commonly found in a mottled red color with accents of white, orange, or pink, the Spanish Dancer gets its name from its flamenco-like movements when swimming, resembling a flamenco dress in motion.

Aquarium Suitability:

Considered expert-only due to its specific care requirements and potentially harmful toxins, the Spanish Dancer is not recommended for beginner aquarium enthusiasts. This species secretes toxins when stressed or injured, which can be lethal to other fish in the tank.

Demands, Care and Hardiness:

The Spanish Dancer requires stable water conditions with a pH ranging from 8.1 to 8.4, a specific gravity between 1.020 and 1.025, a temperature of 22.2-25.6°C, and a carbonate hardness of 8-12 dKH. Their diet consists of sponge species, and their toxin-producing capability acts as a defense mechanism against predators, making them relatively hardy in the right environment.

Reef Suitability:

With caution, the Spanish Dancer can be considered reef-compatible due to its potential toxins and specialized dietary needs. Assessment of tank compatibility, particularly with other inhabitants, is crucial before adding this nudibranch to a reef setup.

Aquarium Setup:

When creating a suitable aquarium setup for the Spanish Dancer, it is essential to mimic its natural reef habitat. Provide ample hiding spots among rocks or corals, ensuring there is enough space for swimming. Carefully select tank mates that are compatible and won't prey on or be harmed by this nudibranch.

Behaviour:

As a peaceful species, the Spanish Dancer is most active during the night, displaying elegant movements while swimming. Their toxin production and bright coloring serve as warning signals to potential predators in the wild.

Feeding and Diet:

Primarily carnivorous, the Spanish Dancer feeds on sponge species, part of the Halichondra family. Their toxin production after consuming sponges serves as a defense mechanism and protection for their offspring. This nudibranch plays a vital role in controlling sponge populations in their natural habitat.

Habitat and Distribution:

In their natural habitat, Spanish Dancers can be found on coral or rocky reefs, particularly in tropical and subtropical waters where their preferred sponge species are abundant. Their distribution is localized to specific regions where environmental conditions are conducive to their survival and reproduction.