Panamic Cushion Starfish (Pentaceraster Regulus)Supplier Availability: Occasionally Pentaceraster cumingi, sometimes known as the Panamic cushion star, Cortez starfish or knobby star (a name also used for other species), is a species of starfish in the family Oreasteridae. It is found in warmer parts of the East Pacific (Gulf of California to northwest Peru, including offshore islands like the Galpagos) and in Hawaii.