This cute little fish is a grunt sculpin. It is not a good swimmer, and it generally moves by using its bright orange pectoral fins to hop across the sea floor. They are generally found in shallow waters (subtidally) and live in crevices. They only get a little over 8 cm (3 .25 in). It has been reported that these fish make little grunting noises when you remove it from water.
Some interesting behaviour has been observed in aquariums during spawing season. Like most fish, males are generally the ones to guard the eggs. What's different is how the eggs are laid and fertilized. Normally, males have to entice (or chase) the females into their chosen nest site to lay eggs, however with grunt sculpins the females chase the males into a cave where they are laying eggs, and won't let them out until they are finished.