Family:Penaeidae Rafinesque, 1815Genus:Metapenaeus Wood-Mason, 1891Metapenaeusensis (De Haan, 1844 in De Haan,1833-1850) Common Name:Greasy back shrimpSynonyms : Metapenaeus ensis var.
baramensis Hall, 1962; Metapenaeus mastersii Hall, 1962; Metapenaeus philippinensis Motoh & Muthu, 1979; Penaeus incisipes Spence Bate, 1888; Penaeus mastersii Haswell, 1879; Penoeus ensis De Haan, 1844 in De Haan, 1833-1850.Distribution : PacificAtlantic and Indian oceans, Barbados, Martinique and Granada of West Indies,Barra Granade in Brazillian coast, Rio Muni in Gulf of Guinea, Hawaiian islandsand Australian Sea. In India, from Arabian sea deep water areas off south westcoast.Environment: Benthicand brackish; 8 – 95 m in depthSize : 15.4 mmCollectionsite : NeendakaraSpeciesexamined : 1 specimen examined of size 12.
4 mmDescription : Rostrum armedwith 8 to 11 teeth along ent ire upper margin, nearly straight andextending to about tip of antennular peduncle. Postrostral crest low. Branchiocardiac crest generally distinct andcurved, almost reaching hepatic spine. First leg bearing a small ischialspine. In adult males, merus of fifthleg with a basal notch followed by a long, inwardly curved spine-like processand a row of tubercles.
Petasma ofmales with distomedian process very large andtriangular, covering almost entire distolateral projection in ventralview.Thelycumof femaleswith long anterior plate; lateral plateswith posterolateraledges strongly raised and curving inward, forming a pair of triangularprojections. Telson without distinct lateral spines. Colour: body greyish green or dark green and covered with dense dark brown dots, largeadults somewhat pinkish;eyes black-brown; antennal flagella reddish; legs generally whitish, in largeadults basal segments covered with red bands; distal part of uropods somewhat bluish with reddish brown margins. Remarks: Metapenaeusensis is reported in few numbers from the trawlers.
Original description : Hall,D.N.F., 1962. Observations on the taxonomy and biology of some Indo-westPacific Penaeidae (Crustacea, Decapoda).
— Colonial Office FisheriesPublications 17: 1-229.