CreatureData

Flat rock crab

Percnon planissimum (Herbst, 1804)

Status not recordedcrabs and lobsters

The flat rock crab (Percnon planissimum) is a species in the family Percnidae, order Decapoda.

No freely licensed photo yet

Quick facts about the flat rock crab

Weight
Not recorded
Length
Not recorded
Lifespan
Not recorded
Main food
Not recorded
Habitat
Not recorded
Young per litter or clutch
Not recorded
Conservation status
Not recorded
Countries on record
Not recorded

Where does the flat rock crab live?

Not recorded

Is the flat rock crab endangered?

No conservation assessment is recorded for this species in our sources. That is not the same as being safe: it has not been matched to an assessment.

How is the flat rock crab classified?

  1. kingdomAnimalia
  2. phylumArthropoda
  3. classMalacostraca
  4. orderDecapoda
  5. familyPercnidae
  6. genusPercnon
  7. SpeciesPercnon planissimum (Herbst, 1804)

Synonyms Acanthops tenuifrons, Acanthopus planissimus, Acanthopus tenuifrons, Cancer planissimum, Percnon demani, Plagusia clavimana, Plagusia serripes

Other names and names in other languages (10)
  • Flat-bodied crabEnglish
  • Green-lined flat crabEnglish
  • Crabe plat à ligne verteFrench
  • papaHawaiian
  • Granchio piatto del reefItalian
  • トゲアシガニJapanese
  • 扁額盾牌蟹Chinese
  • Crabe plat aux yeux rougesFrench
  • päpäHawaiian
  • 裸掌盾牌蟹Chinese

Catalogue of Life

Relatives of the flat rock crab

Other species in the same genus Percnon.

Flat crab

Percnon gibbesi

PercnidaeNo free photo yet

CompareFlat rock crab vs Flat crabFlat rock crab vs Green flat rock crabFlat rock crab vs Blue-eyed rock crabFlat rock crab vs Red-eyed flat crab

Common questions

Answered only where our data holds the answer.

What kind of animal is the flat rock crab?

The flat rock crab (Percnon planissimum) belongs to the family Percnidae in the order Decapoda.

Sources and how to cite this page

Data as of 2026-11-14. How this page is put together.

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APA

CreatureData. (2026). Flat rock crab (Percnon planissimum). Retrieved from https://creaturedata.com/animals/flat-rock-crab

MLA

“Flat rock crab (Percnon planissimum).” CreatureData, 2026, https://creaturedata.com/animals/flat-rock-crab.

BibTeX
@misc{flat_rock_crab_2026,
  title = {Flat rock crab (Percnon planissimum)},
  author = {{CreatureData}},
  year = {2026},
  url = {https://creaturedata.com/animals/flat-rock-crab},
  note = {Data as of 2026-11-14}
}