Fish photography
 

These pictures are taken using expodisc pro digital white balance filter (www.expodisc.com)
I'd custom the white balance set up on my camera to light sourches and water spectrum of the aquarium so it will appear exactly like what our eyes seen on the spot .
Using Ef50f1.4 and EOS1D mkII , the fish is my 3 years BloodRed (63cm) ,light sourches using 2 submerged OceanFree (standard) and 1 studio flash w/softbox
the black spot scar on 5th row scales at FW body are scar from motoro ray stinger when they'd fought

Re: Fish photography
 

Left picture :
This one using "Flash" white balance set up .
Contrast and sharpeness are standard on board camera set up . Watch a bit over hue due to green background bounched reflection over flash duration , colour seems abit over 10% green (on RGB set up)
Same camera but with Sigma 24-70f2.8 EX DG .
Lighting are identical too ( 2 OF submergerged and 1 stuido flash w/ softbox)
Right picture :
This one using "auto" white balance set up , all parameters are identical w/ above description but using EF70-200f2.8L
also i always do not use any filter (even UV /protec )
Its not so obviously seens the difference on 80kb files shown here ,but it shows a big difference (in saturation and colour accuracy) when seens on larger file

Re: Fish photography
 

thanks for the precious information.