#1 I like this the best so far. The fish on the left might need a little work on the head as it doesn't have the typical Barramundi shape, but that can come later.
HI Rafa 17 thanks for those extra entries. The fish are looking much better. I have the feeling that the logos are becoming more complex rather than refined - I appreciate the effort you are making, but I the splashes of water in #19 - #24 aren't really working for me as they make the whole effect seem "messy" rather than eco or gourmet. I like the variations, but I am not sure that the dark colour for the shape of Australia works for me in #29 and #30 - I get the feeling that it makes it a negative space - as if there is a hole in the centre of the logo. At the moment, I think your first logo is still the closest to the brief - maybe if you can update the fish on that one? Thanks so much.