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

@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}}
} 

@Misc{tankarium,
 howpublished = {\url{https://www.tankarium.com/baby-betta-growth-chart/}}
} 

@Misc{petfishonline,
 howpublished = {\url{https://petfishonline.com/betta-eggs/}}
} 

@Misc{fishbase,
 howpublished = {\url{http://www.fishbase.org/summary/Betta-splendens.html}}
}