Zooplankton-feeder
Guides
Palaemon pugio
daggerblade grass shrimp
Palaemon pugio, commonly known as the daggerblade grass shrimp, is a small, transparent caridean shrimp native to estuarine and tidal marsh habitats of the western Atlantic Ocean and Gulf of Mexico. Adults reach approximately 5 cm in length and exhibit yellow coloration with brownish spots. This species serves as an important ecological component in salt marsh food webs, accounting for a substantial portion of nekton biomass and functioning as prey for commercially important fish species. The species has become a standard test organism in toxicological research due to its sensitivity to environmental pollutants.