This closeup of the side of the carapace shows the dendrobranchiate (branching like a feather) gills underneath. This gill pattern is characteristic of dendrobranchiate decapods such as Penaeids but is not seen in true shrimp or in crabs.
As in most seregestids, the rostrum is very short. Unlike Eusergestes similis, the rostrum of Sergia tenuiremis is blunt. There are no supreaorbital or hepatic spines on the carapace.
Sergia tenuiremis captured below 500 m depth off Point Conception, CA, Sept 1992. This photo is of a preserved specimen which has lost its darker original color. The animal has also lost its long, fragile second antennae which are longer than the body. (Photo by: Dave Cowles Oct 2006)
