On the 1st photo the fish looks huge! The second one is very nice, but it's too dark and the colors aren't that live. Increase the brightness and saturation
I quite like the first one, although I'm slightly perplexed by it, it's a really odd angle for wildlife. I like the background, though; the sky's difference in colour shows off the swordfish's mirror-like scales. I agree, however, that the second is a little lifeless. Possibly increase contrast & saturation.
On the 1st photo the fish looks huge! The second one is very nice, but it's too dark and the colors aren't that live. Increase the brightness and saturation