Editing Blue cod (section)

=== Disease and Injuries ===
No specific [[disease]] is found on ''P. colias'', but some [[Injury|injuries]] have been recorded.  Hooking injuries could cause tissue damage and possibly lead to [[Death|mortality]].<ref name="Carbines1999" >{{cite journal | last1=Carbines |first1=G. | year=1999 | title=Large hooks reduce catch-and-release mortality of blue cod ''Parapercis colias'' in the Marlborough Sounds of New Zealand | journal=North American Journal of Fisheries Management | volume=19 |issue=4 |pages=992–998|doi=10.1577/1548-8675(1999)019<0992:LHRCAR>2.0.CO;2|bibcode=1999NAJFM..19..992C }}</ref> Despite having greater risk for [[Parasitism|parasitic]], [[bacteria]]l, or [[Fungus|fungal]] infections, mortality after having a hook injury is often caused by blood loss rather than disease.<ref name="Meka" >{{cite journal |last1=Meka |first1=J.M. |year=2004| title=The Influence of Hook Type, Angler Experience, and Fish Size on Injury Rates and the Duration of Capture in an Alaskan Catch-and-Release Rainbow Trout Fishery |journal=North American Journal of Fisheries Management | volume=24 |issue=4 |pages=1309–1321 |doi=10.1577/M03-108.1|bibcode=2004NAJFM..24.1309M }}</ref>  An article suggests that small hooks cause more blood loss problems than big hooks to ''P. colias''.<ref name="Carbines1999" />

Compared to other [[Osteichthyes|bony fish]], [[swim bladder|swimming bladder]] in ''P. colias'' is absent,<ref name="Blackwell" >{{cite web |last1=Blackwell |first1=R.G. |year=2014 |title=Abundance, size and age composition, and yield-per-recruit of blue cod in the Marlborough Sounds, September 1996.| publisher=NIWA |url=http://fs.fish.govt.nz/Doc/22460/BCO2003-01%20Blue%20Cod%20Marlborough%20Sounds%20Tasman%20Bay%20abundance%20size%20Objective%201%202%203%20final.pdf.ashx}}</ref> this means that they do not suffer from [[barotrauma]] – an injury due expansion or eruption of the [[swim bladder|swimming bladder]] in fish, it is often caused by rapid water pressure change when rising from deep water to water surface.<ref name="Thorncraft">{{cite journal| last1=Thorncraft |first1=G. |last2=Baumgartner |first2=L.J. |last3=Boys |first3=C.A. |last4=Brown |first4=R.S. |year=2013 | title=Merging hydraulics with biology |journal=International Water Power & Dam Construction | volume=65 |issue=1 |pages=42–43}}</ref>