Spotted Lagoon Jellyfish (Mastigias papua)


Spotted jellyfish (or lagoon jellies) are a very popular species within the aquarium trade. They have white spots throughout their semi- translucent body with a variation of base colour, including pale blue, green, pink, orange, and yellow. This colour variation is thought to be dependent on thee symbolic algae in their body. The energy produced by the photosynthesis of the symbiotic algae provides a large portion of their energy requirements. They inhabit quiet lagoons and harbours and migrate daily towards sunlight. Often seen in public aquariums, this species is less commonly kept as a pet jellyfish. Full spectrum light is required to keep this species.

Species Information

  • Harmful to humans: No
  • Distribution: South Pacific
  • Maximum Bell Size: 20 cm (8 inches)
  • Life Span: 1 -2 years
  • Feeding: Freshly hatched baby brine shrimp, coral reef food
  • Temperature: 24 – 28°C (75 – 82°F)
  • Photosynthetic: Yes
  • Care level: Medium
  • Notes:  Even though their energy requirements are mainly provided by the photosynthesis of symbiotic algae in their body, they still need to be fed. Feeding freshly hatched brine shrimp 1-2 times daily is recommended. If you have further feel free to email Exotic Aquaculture specialists or post on the Jellyfish Keepers forum.