| Summary: | <i>Solenocera crassicornis</i> is a commercially important shrimp of the Solenoceridae family. The current study investigated the morphology, molecular identification, phylogenetic relationships, and population dynamics of <i>S. crassicornis</i> in Egypt. Samples were collected monthly (total, 1722; male = 40.19%, wet weight, 0.89–10.77 g; female = 59.81%, wet weight, 1.55–19.24 g) from Al-Attaka commercial catch in the Gulf of Suez in the Red Sea. Two barcode markers, 18S rRNA and cytochrome c oxidase subunit I (COI), were used for molecular identification. COI partial sequences were used to construct the phylogenetic relationships among different species of genus <i>Solenocera</i> and to infer the origin of the studied <i>Solenocera crassicornis</i>. The applied molecular markers successfully identified the studied species to the species level. The genetic distances among <i>S. crassicornis</i> sequences from different countries revealed the Indo-West Pacific origin of <i>S. crassicornis</i>. The relationship between total length (TL) and total weight (TW) was TW = 0.035TL<sup>2.275</sup> and r<sup>2</sup> = 0.805 for males and TW = 0.007TL<sup>3.036</sup> and r<sup>2</sup> = 0.883 for females, indicating that females were heavier than males. Despite its social and economic relevance in the area, information on the hatching, larval rearing, and farming of <i>S. crassicornis</i> is scarce and requires future studies under Egyptian conditions.
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