Common name: bighorn nembrotha

General information

The Nembrotha megalocera, commonly known as the Horned Nembrotha, is a striking species of nudibranch, a group of soft-bodied, marine gastropod mollusks. This species is notable for its vibrant coloration, typically featuring a combination of green, black, and sometimes red hues, which can vary depending on the individual and its diet. The 'horns' in its common name refer to the elongated cephalic tentacles that resemble horns, giving it a distinctive appearance.

Care

Nembrotha megalocera requires a specialized aquarium setup that mimics its natural reef environment. They are sensitive to water quality and require stable, pristine conditions with low nitrate levels. A diet of specific sponges and tunicates, which they feed on in the wild, is essential for their survival in captivity. Due to their specific dietary needs, they are considered challenging to keep and are recommended for experienced aquarists.

Reproduction

Like many nudibranchs, Nembrotha megalocera is a hermaphrodite, possessing both male and female reproductive organs. They lay spiral ribbons of eggs on the substrate or on the surfaces of sponges, which they consume. The larvae are planktonic before settling down and metamorphosing into their adult form.

Habitat

Nembrotha megalocera is found in the tropical Indo-Pacific region, particularly on coral reefs where it feeds on sponges and tunicates. They are benthic creatures, often observed crawling on the reef substrate or on the surfaces of their prey.