Kelloggii seahorses are not the strongest. They are a hybrid breed used for many different things. They are very active, but have the tendency to get sick. They are very difficult to nurse back to health. I am with Brian. Check out seahorse.org. BTW seahorses like flow and it avoids problems in the tank. Just make sure they don't get sucked up by powerheads and such. As the seahorses get bigger they become strong swimmers.