The Ocellated Dragonet or Scooter Dragonet fish can make a very interesting addition to a well established saltwater tank with plenty of amphipods and copepods. They can be very difficult to feed and many slowly starve to death in tanks that can't provide enough live foods to sustain them. You should have a tank with a fairly deep sand bed and live rock to increase your chances of success with keeping this fish. Male Scooter Dragonets may co-exist peacefully with females of the same species if introduced at the same time. However, as mentioned above, feeding the Scooter Dragonet can be very difficult and unless you have an extremely large tank that can provide enough live foods, refrain from keeping multiple in the same aquarium.
These Dragonets are fairly docile (except maybe with other dragonets) and should only be kept with fish that are similar in temperament. You also want to avoid keeping them with some of the larger and more aggressive marine species.

If you're worried that your Dragonet is not getting enough to eat, you can try using rigid aquarium tubing to deliver food directly to where they are in the tank. This can be a challenging thing to do though, as they will often scoot away and hide. Keep trying and they may become used to seeing the tube delivering their fish food.