Petrolisthes armatus

Green Porcelain Crab

A small flat porcelain crab in Marine Shore and Seagrass Meadow habitats, hiding under hard structure while using feathery mouthparts to filter fine suspended food.

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Identity & Origin +

Common Name: Green Porcelain Crab
Scientific Name: Petrolisthes armatus
Realm: Saltwater
Biome: Marine Shore, Seagrass Meadow
Introduction Method: Intentional Seeding
Date First Introduced: July 28, 2024

Population Dynamics +

Current Estimated Population: 12
Population Status: Vulnerable
Carrying Capacity Status: At Capacity
Date Last Observed: May 19, 2026

Section Notes

Without successful offspring, this species is in danger of going extinct in miniBIOTA.

Trophic Ecology +

Trophic Level: Secondary Consumer
Feeding Niche / Method: Filter Feeder
Dietary Inputs: Feeds on plankton
Known Predators: None Known

Section Notes

Trophic classification is Secondary Consumer. Food-web role: Plankton-filtering consumer. Feeding method: Filter Feeder. Dietary inputs: Feeds on plankton

Environmental Tolerances +

Life Cycle & Reproduction +

System Reproduction Status: Attempted/Unsuccessful
Growth Rate: Slow

Section Notes

This species will successfully produce offspring that unfortunately only reach the zoae stage. Predation may be too much for success past this stage. More observations required.

Ecological Role & Symbiosis +

Marine/Saltwater

A marine meadow where seagrasses, macroalgae, grazers, filter feeders, worms, crabs, and small invertebrates compete over light, nutrients, and detritus.

Marine/Saltwater

A sandy, limestone shoreline where beach grasses, crabs, snails, and detritivores move nutrients across the waterline.

Green Porcelain Crab

Section Notes

Section Notes

Classification Pending

Section Notes

Biomes This Species Lives In

Seagrass Meadow

Marine Shore

Porcelain Crab Carries Eggs in the Seagrass Meadow

Related Subjects

Night Observation Reveals Jellyfish, Sponge Flow, and Crab Zoea

Pipefish and Porcelain Crab Zoea Appear at Night

Pistol Shrimp Barricades Its Home Against Crabs

Related Subjects

Green Porcelain Crab

Biomes This Species Lives In

Porcelain Crab Carries Eggs in the Seagrass Meadow

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