Rockhead
NameRockhead
Scientific NameRhamphocottus richardsonii
Common NamesGrunt Sculpin, Rockhead, Rock Sculpin
FamilyRhamphocottidae
OriginNorth Pacific Ocean, Alaska, California, Japan
Temperamentsemi-aggressive
Dietcarnivore
Care Leveladvanced
Minimum Tank Size (Gallons)30
Max Size (Inches)3.5
Water TypeSaltwater
Temperature Range (°F)45-55
pH Range7.8-8.4
Compatible SpeciesSpecies-specific tank recommended, Larger non-aggressive coldwater invertebrates, Certain coldwater anemones
Description
The Rockhead, also known as the Grunt Sculpin, is a unique coldwater marine fish characterized by its large, flattened head, vibrant orange and black banded body, and fan-like pectoral fins. It is an ambush predator that uses its camouflage to blend with rocky substrates, feeding on small invertebrates. This species requires a specialized coldwater aquarium setup.
