The crucifix crab (Charybdis feriatus) goes by several local names in Taiwan: flower crab, hué-sio-kong (fire-roasted), and hue-tshi̍h-á in Taiwanese. The northern coast serves as its primary habitat, with Wanli District in New Taipei City functioning as the nation's largest hub. Peak season runs from September through December, when the crabs reach their fullest meat content and sweetest flavor, drawing seafood enthusiasts from across the region. Along with the red-spotted swimming crab and the swimming crab, the crucifix crab forms the celebrated trinity known as the Wanli Three Crabs.

A member of the Portunidae family, the crucifix crab displays distinctive reddish-brown and dark mottling across its body, with striking longitudinal light-colored stripes running along its carapace—features that inspired its "flower crab" moniker. Coastal fishing vessels harvest these crabs primarily from waters off Taiwan's northern shores, where Wanli has built its fishing industry around this prized catch.

Wanli Crabs Drive Local Tourism

The crucifix crab's thin shell absorbs flavors readily, making it ideal for simple preparations—steamed whole or stir-fried—that showcase its natural sweetness. These straightforward cooking methods best reveal the crab's inherent delicacy. The Wanli Crab brand has elevated the crucifix crab's profile beyond local markets, transforming it into a tourism draw that now anchors the northern coast's economy.

Sustainability measures protect this valuable resource. The Fisheries Agency mandates a minimum carapace width of 9 centimeters for harvested crabs and prohibits catching egg-bearing females from August through December. Since 2015, the New Taipei City Agriculture Bureau and National Taiwan Ocean University have collaborated on the "Double Flower Project," researching artificial breeding for both cuttlefish and flower crabs. Scientists successfully cultivated crucifix crab larvae and developed a specialized feed using Pseudodiaptomus ishigakiensis that allows the young crabs to thrive through their complete life cycle from egg to mature adult. Research continues to improve survival rates.

These advances enable wild populations to be supplemented through hatchery-raised stock releases. Whether commercial aquaculture proves viable remains an intriguing prospect for the future.