Identification
Description:
Medium-sized shrimp, with a maximum body length of approximately 20 cm, typically ranging from 10 to 14 cm. The shell is rough, a vibrant dark brick-red color, and features tufts of stiff, reddish-brown hairs. The antennae are very short; the terminal filaments of the second antennae are whip-like, stiff, and inflexible, shorter than the length of the cephalothorax. The cephalothorax is oval, twice as long as its widest point, and approximately the same length as or slightly shorter than the abdominal segments. The cervical groove is faint, lacking prominent spines and a rostrum (horn-like projection). The lateral margins lack spines; the rostrum is triangular, with serrated or spined lateral edges, and a row of small spines along the midline. The eyes and eyestalks are small, recessed within the eye sockets, and without spines on the eyes. The dorsal carapace of the abdominal segments lacks transverse grooves but has very distinct ridges.
Biology and Ecology
Habitat and Behavior:
A species characteristic of tropical seas, typically inhabiting crevices within coral reefs, at depths ranging from 9 to 27 meters. They are primarily active at night.
Distribution
Within Vietnam:
Phu Yen, Khanh Hoa provinces.
Global:
Indo-West Pacific region: From the Red Sea and East Africa to Southeast Asia, southern Japan, and Polynesia.
Value
Significance:
A rare and infrequently observed species, often displayed in aquariums or museums.
Conservation Status
Threats and Population:
The population is very small, estimated to be fewer than 1000 mature individuals. Their habitat is frequently impacted by human activities; it is estimated that the area of distribution has decreased by at least 20% in the past 10 years.
IUCN Red List Status:
VU A1c D1 (Vulnerable).
Conservation Measures
Recommended Actions:
Strictly prohibit coral extraction, fishing with explosives or poisons, and avoid pollution of coral reefs, which constitute their habitat, particularly due to tourism activities.