Nguyen Huu Yen Nhi, Preston T R , Ogle B and Lundh T 2010 Effect of earthworms as replacement for trash fish and rice field prawns on
growth and survival rate of marble goby (Oxyeleotris marmoratus) and Tra
catfish (Pangasius hypophthalmus)
MSc Thesis, MEKARN-SLU
http://www.mekarn.org/MSC2008-10/theses/nhi_2.htm