Ou River (Zhejiang) two alien species (Mozambique tilapia and largemouth bass); however, 34 species recorded in 1972 were absent in 2010, and overall fish density was lower. Goby "Pseudorhinogobius aporus" is endemic to the Ou River system: it is only known from a brook in the upper Ou River system. Ou River (Zhejiang) The Ou River () or Oujiang is the second-largest river in the Zhejiang province of eastern China. The river flows before finally reaching the city of Wenzhou and emptying into the East China Sea, into which it discharges of water annually. Shen Jiang (), Jiang Yongjia (), and Wenjiang ()
Vocabulary learning By its nature, incidental vocabulary learning is one of the key aspects of language acquisition. This concept, which is also referred to as passive learning (Shmidth, 1990; as cited in Alemi & Tayebi, 2011) or implicit learning (Gu, 2003), is the process of acquiring vocabulary without placing the focus on specific words to be learned (Paribakht & Wesche, 1999). It is deemed that, this type of learning should occur with low-frequency words (Nation, 2005) as the first few thousand words are better learned through deliberate learning approach (Huckin & Coady 1999). However, this may be hampered by the fact that