“…The gastric evacuation of fishes has been well documented (Fänge & Grove, 1979;Smith, 1989), but a definitive pattern has not emerged, largely due to the wide variation in biotic and abiotic factors among experiments. The mathematical models used to describe the gut evacuation of fishes also vary considerably, from simple linear relationships through to complex multifactor models (Jobling, 1981(Jobling, , 1986(Jobling, , 1987Medved, 1985;Persson, 1986;Hopkins & Larson, 1990;dos Santos & Jobling, 1991, 1992Salvanes et al, 1995). Lags may occur at the beginning of the digestion process, which have led to the use of asymmetric models (MacDonald et al, 1982;Medved, 1985;Macpherson et al, 1989;Nelson & Ross, 1995).…”