@Misc{Wiki,
 howpublished = {\url{https://en.wikipedia.org/wiki/Clarias}}
} 

@Book{Kooy2010,
 author = {Kooijman, S.A.L.M.},
 year = {2010},
 title  = {Dynamic Energy Budget theory for metabolic organisation},
 publisher = {Cambridge Univ. Press, Cambridge},
 pages = {Table 4.2 (page 150), 8.1 (page 300)},
 howpublished = {\url{../../../bib/Kooy2010.html}}
} 

@Article{WillTwed1978,
 author = {Willoughby, W. and D. Tweddle},
 year = {1978},
 title = {The ecology of the catfish, \emph{Clarias gariepinus} and \emph{Clarias ngamensis} in the {S}hire {V}alley, {M}alawi},
 journal = {J. Zool.},
 volume = {186(4)},
 pages = {507-534}
} 

@Misc{fishbase,
 howpublished = {\url{https://www.fishbase.de/summary/Clarias-ngamensis.html}}
}