In this study, the length-weight relationship (LWR) of 14 fish species including Merlangius merlangus (Linnaeus, 1758),Trachurus trachurus 1758), Mullus barbatus Linnaeus, 1758, Gobius niger Scorpaena porcus Arnoglossus kessleri Schmidt, 1915, Uranoscopus scaber Serranus hepatus Sygnathus thyphle Aphia minuta (Risso, 1810), Trachinus draco Parablennius tentacularis (Brünnich, 1768), Illionymus ...

Abstract The timing of entry into freshwater by mature anadromous fishes is an important component their migration phenology. In iteroparous species, identifying the cues that influence freshwater, and annual variability in these timings, assessing extent individual repeatability. Here, passive acoustic telemetry tracked 71 twaite shad Alosa fallax (‘shad’) returning to River Severn’s upper est...