[-] You can remove textures from under the first two buildings (The Townhall and Barracks - This gigantic Murloc) - the texture of Human Buildings looks ugly under them. Also I dislike your recoloring of the Mercenery Camp (It's black, wth?).
[-] No single custom trigger for your specific race. Idea of the race isn't original though.
[-] As it has already been posted - you lack trees.
[-] Are you sure this is "Melee"? Did you see gated/neutral towers/campaign units controlled by the neutral army?
Race overall isn't that bad, you have fighters, caster, [-] just one hero?
Sorry, but there is no place for such a thing on Hive, IMO.