52) ~ Durrell’s Freshwater Crab~

Close-Up of Orange Crab on Rocky Surface with Moss
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More about 52) ~ Durrell’s Freshwater Crab~

**Durrell’s Freshwater Crab

Scientific name: Ceylonthelphusa durrelli

Article (short):

Tiny, armored, and perfectly adapted to cool mountain streams, Durrell’s freshwater crab lives in pockets of montane forest where every clean spring matters. These crabs can vanish silently when streams are diverted or polluted - they’re small guardians of stream health and excellent focal species for local conservation education.

Quick facts

Status (approx.): Critically endangered / range-restricted.

Range: Central-province montane streams (Sri Lanka).

Habitat: Shallow, cool, forested stream margins and rocky riffles.

Diet: Omnivorous - detritus, small invertebrates, algae.

Lifespan: Several years typical for freshwater crabs.

Reproduction: Eggs brooded under abdomen; larval/juvenile development tied to stream conditions.

Ecological role: Nutrient recycling, detritus processing, prey for birds/fish.

Main threats: Water pollution, stream diversion, habitat fragmentation, sedimentation.

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