@Article{ButlRowl2008,
 doi = {10.1071/mf07188},
 author = {Butler, G. L. and Rowland, S. J.},
 year = {2008},
 title = {Using traditional age and growth techniques in endangered species management: eastern freshwater cod, \emph{Maccullochella ikei}},
 journal = {Marine and Freshwater Research, ), . doi: },
 volume = {59(8},
 pages = {684–693}
} 

@Misc{fishbase,
 howpublished = {\url{https://www.fishbase.se/summary/Maccullochella-ikei}}
}