In this study, we investigated the effects of salinity on the growth and the activities of the digestive enzymes of Anguilla marmorata elver [body weight(9.76 ± 0.36) g] and A. bicolor pacifica elver [body weight(11.82 ± 0.04) g]. Subjects of the two species were cultured at four salinities(0‰, 5‰, 10‰ and 18‰) for 30 days. We first weighed all the eels in each tank, and then analyzed three types of digestive enzymes(protease, amylase and lipase) in three digestive organs(liver, stomach and intestine) of bo...