is a typical prawn with a cylindrical body composed of a carapace at the front and six abdominal segments. It has a large upturned rostrum in front of the eyes with distinctive dorsal and ventral teeth. Just below the large compound eye on each side is the antennule, which is divided into three parts. Below the antennule is the antenna, which is divided into two parts; the short flat segment (scaphocerite) and the long whip-like flagellum. Palaemon serratus
is translucent with red/brown lines on the carapace and abdomen. The first two pairs of walking legs bear claws (chela) and have yellow and red banding.Palaemon serratus
could be mistaken for the similar species Palaemon elegans, Palaemon longirostris
and Palaemon adspersus
but can be separated by the shape of the rostrum and the number of dorsal and ventral rostral teeth.
British Isles Distribution
Recorded from Shetland and Orkney. Scarcely recorded on the northeast coast of Britain. Frequent on the west, south and south west coast of England and Wales and west coast of Scotland. Recorded from the west, south west, south and southeast coast of Ireland.