Common name: goemetric goniobranchus

General information

The Geometric Nudibranch, scientifically known as Goniobranchus geometricus, is a strikingly patterned sea slug found in the Indo-Pacific region. This species is part of the diverse and colorful family of nudibranchs, which are soft-bodied, marine gastropod mollusks. The Geometric Nudibranch is easily recognizable by its vibrant coloration and geometric patterns, which serve as a warning to potential predators about its toxicity.

Care

In the aquarium, Geometric Nudibranchs require a specialized setup due to their specific dietary needs. They feed exclusively on certain types of sponges, which must be present in the tank to sustain them. These nudibranchs are sensitive to water quality and require stable, pristine conditions with well-oxygenated water. They are not recommended for beginners due to their complex care requirements.

Reproduction

Like many nudibranchs, Goniobranchus geometricus is a hermaphrodite, possessing both male and female reproductive organs. They can self-fertilize or mate with another individual. After mating, they lay spiral ribbons of eggs on the substrate or tank glass. The larvae are planktonic before settling down and metamorphosing into their adult form.

Symbiosis

While not involved in symbiotic relationships like clownfish and anemones, the Geometric Nudibranch's bright coloration is a form of aposematism, a biological phenomenon where the coloration serves as a warning signal to predators that the organism is toxic or unpalatable.

Habitat

Goniobranchus geometricus is typically found in tropical and subtropical waters, often on coral reefs or rocky substrates where their sponge prey is abundant. They are benthic creatures, meaning they live on the bottom of the ocean, and can be found at various depths, usually not exceeding 30 meters.