Editing Lagoon triggerfish (section)

==Vision==
This species has one type of single [[cone cell|cone]] (SC), with an [[opsin]] peaking in sensitivity at 413&nbsp;[[nanometer|nm]] (S),<ref>S = short [[wavelength]], M = middle wavelength, L = long wavelength</ref> and a [[Double cone (biology)|double cone]] with two different opsins in each member peaking at 480&nbsp;nm (M) and 530&nbsp;nm (L) respectively.<ref>{{cite book |title=Vision down under|chapter=Colour vision in reef fish |last= Marshall|first=J. |author2=Jennings, K.|author3= Goldizen, A|author4=Vorobyev, M. |year=2004 |publisher=Fraser Island |location=Brisbane, Australia}}</ref> Behavioural research has provided evidence that individual members of the double cones can act as independent channels of colour information, aiding in understanding double cone function.<ref name="Pignatelli et al">{{cite journal |last1=Pignatelli |first1=V. |last2=Champ |first2=C. |last3=Marshall |first3=J. |last4=Vorobyev |first4=M. |year=2010 |title=Double cones are used for colour discrimination in the reef fish, ''Rhinecanthus aculeatus'' |journal=[[Biology Letters]] |publisher=The Royal Society |volume= 6|issue= 4|pages= 537–539|doi=10.1098/rsbl.2009.1010 |pmc=2936199 |pmid=20129950}}</ref> This research suggests the species has [[trichromacy|trichromatic vision]], like humans.

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File:Reef trigger fish. (11111536093).jpg|Lagoon triggerfish
File:Picasso triggerfish.jpg|Lagoon triggerfish live on the flat areas of the reef.
File:Picasso triggerfish Pengo.jpg|Aquarium specimen
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