Daily activity, feeding and rations in gobies and brown shrimp in the northern Wadden Sea

A 24 h trawl fishery was conducted near the island of Sylt, northern Wadden Sea, Germany, to investigate and compare daily patterns of activity and feeding among the gobies Pomatoschistus microps Krayer and P. minutus Pallas and the brown shrimp Crangon crangon L. Relative occurrence of the 3 species was generally consistent, with C. crangon dominating at about 93 %, except at midnight, when P. minutus and P. microps occurred at 68 % and 12 %, respectively. Peak abundances of C. crangon and P. minutus occurred at dawn and of P. mjcrops at sunrise, coinciding with rising tide.