Common name: Spagetti worm

Scientific name: Loimia medusa (Savigny in Lamarck, 1818)

General information

The Spaghetti Worm, scientifically known as Loimia medusa, is a fascinating marine polychaete worm that belongs to the family Terebellidae. They are named for their numerous long, thin, tentacle-like structures that resemble spaghetti. These tentacles are actually highly specialized feeding appendages that the worm uses to collect organic particles from the surrounding water and sediment.

Details

Recommended minimum tank volume
75 liter (20 gallons)
Salinity
S.G. 1.023 to 1.025
Temperature
22 to 26 °C (72 to 79 °F)
Acidity
pH 8.1 to 8.4
Average size
10 cm (4″)
Care level
Moderate to easy Sensitive to poor water quality.
Diet
Detritivore Feeds on detritus and organic matter.
Reefsafe
Yes
Aggression
Peaceful
Captive bred
No

Taxonomy

  1. Kingdom
    Animals
    Animalia
  2. Phylum
    Segmented Worms
    Annelida
  3. Class
    Polychaetes
    Polychaeta
  4. Order
    Spaghetti Worms
    Terebellida
  5. Family
    Spaghetti Worms
    Terebellidae
  6. Genus
    Terebellid Worms
    Loimia
  7. Species
    Spagetti worm
    Loimia medusa (Savigny in Lamarck, 1818)
  8. Synonyms
    Terebella medusa Savigny in Lamarck, 1818

Care

In the aquarium, Spaghetti Worms are considered beneficial detritivores. They help maintain a clean substrate by consuming detritus, uneaten food, and decaying matter. They are relatively easy to care for, requiring a sandy or muddy substrate where they can burrow and extend their tentacles to feed. Stable water conditions and regular feeding of fine particulate foods will support their health and growth.

Reproduction

Spaghetti Worms are known to reproduce both sexually and asexually. In an aquarium setting, sexual reproduction is less common, but hobbyists may occasionally observe small swarms of gametes released into the water column. Asexual reproduction, through fragmentation, may also occur, leading to the establishment of new individuals.

Habitat

Loimia medusa is typically found in shallow marine environments, often buried in sandy or muddy substrates. They are widespread in various oceanic regions, including the Atlantic, Pacific, and Indian Oceans. In the wild, they can be found at depths ranging from the intertidal zone to several meters below the surface.