it looks to me like a male and you could be right about it being a kuda or it could rainbow brumby. Have a look to see if it has a pouch if so a male females have ridges all the way down the front of the body males have ridges half way down then smooth out for the pouch. Hope this helps
Well I dono everyone has a different opinion about what it is. And for those who need scientific names I thought it was a Hippocampus kuda, also known as the common seahorse, which is a member of the family Syngnathidae of the order Syngnathiformes.
I have been told by SeahorseSource though they think it's a Hippocampus erectus, also known as the Lined seahorse, which is a member of the family Syngnathidae of the order Hippocampinae. I dono it gets along with everything in the tank and is doing very well, it eats everything so it's all good. I have determined it's a boy though so I am looking for females now if anyone knows where I can ge some resonably priced.