Studies of the biology of the lesser weever fish, Trachinus vipera Cuvier II. Distribution

II. Distribution



The distribution of Trachinus vipera, worldwide and around the British coast, is summarised. Field observations indicate that the fish occurs throughout the intertidal zone; is more active at low light intensities, and can survive the low tide period buried in the intertidal sand; can tolerate salinities as low as 19%0, for short periods; exhibits a tidal periodicity, is more active on the flood tide than the ebb tide; moves into deeper warmer water in winter, the extent.of the movement being temperature dependent. The critical temperature initiating this movement is probably 5deg; C. The fish is not available for capture in cold weather, because it may be hibernating, buried in the sand.