Sea Robins (Prionatus sp) are mostly Bigheads or Bandtails, but we just sell them as Sea Robins. They grow to around a foot in length and are carnivores. They crawl aaround the bottom on their ventral fins, and use the fingerlike spines of their pectoral fins as "hands", turning over rubble to search for food. These are a little more difficult to care for, and need a longer acclimation period when introducing into the aquarium. They are carivores, but will adapt to most aquarium foods.