Algerian prawns, especially those of Bona, are large and of a delicate flavour.
This estuary they called the Rio dos Camaroes (the river of Prawns), from the 2 abundance of the crustacea found therein.
The name of "pink shrimp" is given to Pandalus montagui or annulicornis, which turns red on boiling and which resembles in form the larger "prawns," having a long rostrum or beak, saw-edged above and below.
The larger shrimp-like crustacea are generally known as "prawns," the name being especially applied in Britain to the species Leander serratus, formerly called Palaemon serratus, which is highly esteemed for the table.
The large river-prawns of the genus Palaemon (closely allied to Leander) found in most tropical countries are also often used as food.
Prawns, crayfish and oysters are also obtainable, and turtle (Chelonia mydas) are frequently captured.
In warmer seas many other kinds of prawns are caught for food.
Willemoes Suhm, which makes up for its vanished eyes by its extraordinarily elongate and dentated claws; in Psalidopus huxleyi, Wood-Mason and Alcock (1892), bristling with spikes from head to tail; in the Nematocarcinidae, with their long thread-like limbs and longer antennae; in species of Aristaeopsis reported by Chun from deep water off the east coast of Africa, bright red prawns nearly a foot long, with antennae about five times the length of the body.
The Stenopidea, another primitive group, differing from the Penaeidea in the character of the gills,, appear in the Trias and Jurassic. The Caridea or true prawns and shrimps appear later, in the Upper Jurassic, some of them presenting primitive characteristics in the retention of swimming exopodites on the walking-legs.
They include a jelly-fish, molluscs, prawns, crabs, &c., and were at first considered to form an isolated group found in no other of the African lakes; but this supposition has been proved to be erroneous.
CRUSTACEA, a very large division of the animal kingdom, comprising the familiar crabs, lobsters, crayfish, shrimps and prawns, the sandhoppers and woodlice, the strangely modified barnacles and the minute water-fleas.