The order Euphausiacea comprises two genera with a total of 85 species.
2.
There have been many theories of the location of the order Euphausiacea.
3.
It also supports a close relationship between Euphausiacea and Decapoda.
4.
Immature specimens feed on small deep-sea fishes and crustaceans, especially Euphausiacea.
5.
Mature hake feed mainly on fish, squid, and crustaceans, especially Mysidacea and Euphausiacea.
6.
The blue whale mostly feeds on krill ( " euphausiacea " ) which is a small, abundant crustacean.
7.
One study supports the monophyly of Eucarida ( with basal Mysida ), another groups Euphausiacea with Mysida ( the Schizopoda ),
8.
Gopalakrishnan, K . and E . Brinton . ( 1968 ) Preliminary observations on the distribution of Euphausiacea from the International Indian Ocean Expedition.
9.
,the order Euphausiacea is believed to be monophyletic due to several unique conserved morphological characteristics ( autapomorphy ) such as its naked filamentous gills and thin thoracopods and by molecular studies.
10.
Analysis of the mitochondrial genome supports the monophyly of Brachyura ( crabs ), Caridea ( shrimps ), Euphausiacea ( krill ), Penaeidae ( prawns ) and Stomatopoda ( mantis shrimps ).
