H. barbouri (was histrix) is usually about 4"-5". This seahorse has one distinctive way to tell it from other seahorses. It is the only one with black stripes AROUND the snout. The crown is a 5 pointed one, and is distinctive. They are usually a bit prickly. Their colors are brown, cream, tan, and yellow. Common name is often "Prickly Seahorse" and occasionally "Yellow Seahorse", but they ALWAYS have the "zebra" stripes on the snout. Found: Indo-Pacific, around the Gulf of Thailand, and South Sea China.