I came across this picture on the web today, and it struck me as something a bit different. What species do we have here ? Is it a yellowfin, or a big-eye ?
There's a reason I ask, which I'll tell you about later.
Now dog gone it Roddy... You threw one of them "tween" fish in there that you really need to bust open and look at the liver to determine 100%.
The reason I say that is there is a a whitish patch at the forward top of the anal fin that usually is an indicator of big eye. The total package however with the more slender body leans yellow. Then the upper lip being stunted or malformed tosses another wrench that I just don't recognize...Possible that its one of those indo Pacific exotics that we wouldn't have a clue about.
Sorry I couldn't put a final say as to specie but at least its a couple observations that somebody else might be able to take a step further...
ShortFined YellowFin, the tail nock is a quick indicator but this photo is too fuzzy to see it when blown up that much. Body shape says yellowfin all the way. Dont see many shortfins like that but they cause an argument every time!