Thor amboinensis

Bold-spotted anemone shrimp | Squat Anemone Shrimp
Thor amboinensis
Thor amboinensis, Bali, Indonesia, Photo: Ian Shaw
Thor amboinensis
Thor amboinensis, Lembeh, Sulawesi, Photo: Ian Shaw
Thor amboinensis
Thor amboinensis, Lembeh, Sulawesi, Photo: Graham Edgar
1 / 3
Thor amboinensis
Thor amboinensis
Thor amboinensis


Tropical Atlantic/Caribbean, Tropical Eastern Pacific, Tropical Indo-Pacific


Small shrimp with distinct large irridescent yellow-white spots bordered in thin white and blue bands. Spots are symmetrically arranged over their bodies. Background body colour is variable, but typically olive or brown. When at rest, abdomens and tails arch upward toward the head. Shares a symbiotic relationship with several species of anemone, living amongst the tentacles for protection. 


Max Size: 2 cm

Sea Temperature Range: 18.1-29.7°C

Depth: 1-60m

Habitat Generalization Index: N/A

Also referred to as the SGI (Species Generalisation Index), this describes the habitat niche breadth of the species. Species with values less than 15 are found in a relatively narrow range of reef habitat types (specialists), while those over 25 may be found on most hard substrates within their range (generalists). Learn more here.

Conservation and Rarity

IUCN Status: Not Evaluated

Occurrence: Rare (0.4% of sites)

Occurrence describes how often the species is found on surveys within its distribution. It is calculated as the % of reef sites surveyed by RLS divers across all the ecoregions in which the species has been observed

Abundance: Few (2 per transect)

Abundance is calculated as the average number of individuals recorded per RLS transect, where present.