Stenorhynchus seticornis, the yellowline arrow crab or simply arrow crab, is a species of marine crab.

Stenorhynchus seticornis, or the yellow line arrow crab, is commonly found in shallow water among corals, and in deeper waters up to 180 m. It is part of the family Inachidae which are true crabs, meaning they have their antennae between their eyes.

Stenorhynchus seticornis (Herbst, 1788) Stenorhynchus seticornis is the arrow crab. Its body is triangular, with long and thin legs.