Common name: Halgerda carlsoni

General information

Halgerda carlsoni is a striking species of sea slug, specifically a dorid nudibranch, known for its distinctive coloration and patterns. This species is named after marine biologists Ronald Carlson and Patricia Bieler, who have contributed significantly to the study of nudibranchs. Halgerda carlsoni is characterized by its white body with a network of raised yellow ridges and spots, and orange-tipped tubercles. It's a popular subject for underwater photographers and a fascinating addition to the home aquarium for advanced hobbyists who appreciate its unique appearance and behavior.

Care

Caring for Halgerda carlsoni in a home aquarium requires a well-established system with stable water parameters. They are sensitive to changes in water quality and require a diet of sponges, their natural food source. It's crucial to research and provide the specific types of sponges they consume, as they are often specialized feeders. A tank with live rock and a mature sponge population can help sustain them, but supplemental feeding may be necessary.

Reproduction

In the wild, Halgerda carlsoni are hermaphrodites, meaning each individual possesses both male and female reproductive organs. They can engage in reciprocal mating, where both individuals exchange sperm to fertilize their eggs. The eggs are laid in a spiral ribbon and will hatch into free-swimming larvae before settling and developing into adults. Reproduction in captivity is rare and requires specific conditions that mimic their natural habitat.

Habitat

Halgerda carlsoni is found in the tropical Western Pacific, particularly around the Marshall Islands and the Philippines. They inhabit reef slopes and lagoons, typically at depths where sponge populations are abundant. Their presence in an aquarium can indicate a healthy and mature reef system.