not necessarily a complete list: Mysidae Eucopiidae Lophogastridae Petalophthalmidae Gnathophausiidae
The Mysidacea is an order of small, shrimp-like creatures including the species Neomysis americana (opossum shrimp). They are sometimes referred to as Mysida (as a common name, not a systematic name) or collectively as opossum shrimps, though that name is also used for individual species.
Note that despite their name, and their superficial resemblance to shrimps, they are only quite distantly related to the true shrimps, which are classified in order Decapoda. The characteristics of the Mysida include the following:
They have a well developed carapace that covers most of the thorax, but it is never fused with more than four of the thoracic segments
Their pereopods are biramous (i.e. separated into two branches), except sometimes the last pair, which may be reduced
Their pleopods are reduced. In males they may be modified
Male mysids are slightly larger than female mysids and are readily identifiable by their conspicuous absence of the white brood pouch.
For laboratory studies, mysid separation is done manually by isolating the adults, transferring ovigerous (egg-bearing) females to a culture dish, and removing the juveniles with a pipette.
Fig 6 -Brine shrimp, rotifer, and oyster trochophore larvae.
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