Mudskippers (Periopthalmus sp.) are a very unique type of fish that you don't see very often. They're a saltwater/brackish species that has it's eyes on the top of it's head and a tan/olive body with dark mottled stripes along its sides. Males will have a large sailfin on their back that they use for fighting other males and wooing females. They are unique in that they will climb on land and rocks and have more of a amphibious lifestyle then an aquatic lifestyle. They require a more specialized tank setup with a land section to climb out on, preferably with sand as they do like to sift through the sand for food particles. They will grow up to 4 inches and will require a minimum tank size of 30 gallons. Having a Mudskipper tank has many upsides being they not only look peculiar they also have outgoing personalities and will often cling to the sides of tanks begging for food. A low flow tank is preferable for them as they do not like strong currents. They are reef safe and they can be kept in groups as long as there are more females as males will fight for territory. Feed them a variety of live and frozen foods such as brine shrimp, mysis, and carnivore mix. They will also eat insects such as crickets, fruit flies, and meal worms.