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Frog Crab (Ranina ranina)

Photo of Frog Crab (Ranina ranina)

Key facts

Scientific name
Ranina ranina
Common name
Frog Crab
Category
Crustaceans
Family
Raninidae
Genus
Ranina
Size
10–25 cm
Depth
20–300 m
IUCN status
Least concern (LC)
Danger level
Harmless
Habitats
sandy-bottom, muddy-bottom
Behaviours
benthic, nocturnal
Ocean zones
Asian Pacific, Indian Ocean & Red Sea

Description

Ranina ranina reaches 25 cm. Unique frog crab (Raninidae), Indo-Pacific. Ovoid carapace, prominent eyes resemble frog (hence name). Flattened abdomen, robust claws. Burrows in sandy-muddy bottoms 20-300 m. Specialized nocturnal. Bivalve mollusk predator. Minimally commercialized = LC. Rarely observed. Rising aquarium hobby popularity.

Photo of Frog Crab

Photo of Frog Crab (Ranina ranina)

Frequently asked questions

How big is the Frog Crab?
Frog Crab (Ranina ranina) reaches 10–25 cm in length.
At what depth can you find the Frog Crab?
Frog Crab is found between 20–300 m deep.
Is the Frog Crab dangerous to divers?
Danger level: Harmless.
What is the conservation status of the Frog Crab?
IUCN status: Least concern (LC).
Where can you find the Frog Crab?
Found in: Asian Pacific, Indian Ocean & Red Sea.

Similar species

  • Palinurus elephas - European spiny lobster
  • Clibanarius erythropus - Red-legged hermit crab
  • Homarus gammarus - European lobster
  • Pachygrapsus marmoratus - Marbled rock crab
  • Mithraculus forceps - Red-ridged clinging crab
  • Mithrax spinosissimus - Channel clinging crab

Sources

  • Taxonomy: WoRMS (AphiaID 209574)
  • Photos: iNaturalist (CC BY-NC)
  • Distribution: GBIF (taxonKey 5178652)
  • Conservation: IUCN Red List
  • Encyclopedia: Wikipedia