Re:Taming the Wild Tuna - Why farmed fish are taking over di...
by maxerickson on Saturday November 15, 2014 @02:59PM
(#8612487)
Wikipedia looks like it makes sense:
http://en.wikipedia.org/wiki/Pacific_bluefin_tuna#Life_histo...
They are reproductive for more than 2 years and lay millions of eggs in each breeding season.
Note also that it's 1 in 30 million babies that actually hatch that survive, not just 1 in 30 million eggs.