Description of Red- Knobbed StarFish Swollen red areas on the body and arms help to identify these predatory starfish; the red areas form a meshlike pattern against a whitish background. Red-Knobbed Starfish are relatively easy to keep, but they will attack and feed on sessile invertebrates sharing their quarters, as well as any mollusks that they can ambush, so their companions need to be chosen very carefully.
Ranges from the Red Sea to Indonesia and islands of the Pacific.
15' in (30 cm) in aquariums.
Mussel, clam, and shrimp meat. Place a small amount of food under the starfish each day.
Temperature 77-79°F (25-26°C); alkaline (pH 8.1-8.3) with SG 1.020-1.024.