Three-spot Dascyllus ~ Three-spot DamselFamily: Pomacentridae Dascyllus trimaculatusPhoto © Animal-World: Courtesy Greg Rothschild
These damsels are often called the Domino Damsel because of their juvenile coloration which imitates a "domino".
As juveniles they have a distinct white spot on the forehead and a prominent white spot on the upper side. In a mature Three-spot Dascyllus or Domino Damsel, the marks will most likely disappear or leave just a remnant spot on the side.
For more Information on keeping this fish see:
Guide to a Happy, Healthy Marine Aquarium
Mean Domino Damsel, Dascyllus trimaculatus (10 gallon saltwater tank)
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Typical "learning curve" of new aquarists.
The Domino Damsel in this video is in a very small tank, is a very small juvenile, yet has a very LARGE attitude. As adults they are gray and ugly, matching their personality. When told to cycle tanks with damsels, every new aquarist who follows this advice is faced with the duty of removing this beast shortly after it settles. Want to keep it? For one, you will need 55 gallons and for a pair, 75 gallons. They will host various anemones like Carpet Anemones, but they like branching SPS coral and will stick close to that coral once they have bonded to it. Oddly, these meanies are still NOT as bad as the Blue Devil Damsel, but they would be part of the rival gang! House with other aggressive fish that are larger, period.
Domino Damsel, Dascyllus trimaculatus hosting Carpet Anemone
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An aquarist doing it right with lone Domino Damsel!
It is great to see an aquarist who realizes the evil intent of the Domino Damsel as it grows older! This aquarist has chosen to house his damsel ALONE and as the only fish in the tank! This is for the safety of other fish, since this damsel will attack everything that is the same size, anything that is semi-aggressive and larger and especially anything peaceful. House in a large tank with large angelfish, mellower triggers and other large aggressive fish that are not too large and will eat them. They grow to 5" and lose their jet black coloring and 3 bright white dots and put on drab gray and faded white spots that shrink as they grow.
Domino Damsel in the wild.
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Adult Domino Damsel videoed in the wild.
This video shows a Domino Damsel that has such attitude, it doesn't even fear the diver! This adult is a drab gray and has a drab, nasty personality. Imagine the size tank needed for this adult as you watch the area around his home that he guards. There appears to be some juveniles hanging around the base of his little rock, which is normal in the wild, however in captivity, it may not be tolerated. These fish are best kept in the wild since most aquarists want to get rid of them soon after purchase. A black clownfish with white strips is just as attractive but won't kill their tank mates!
Habitat: Natural geographic location: Domino Damsel or Three-spot Dascyllus are found in the Western Pacific and the Indo-West Pacific from eastern Africa and the Red Sea to the islands of Oceania. It is not found in Hawaii or the Marquesas Islands. They are found at depths between 3 - 180 feet (1 - 55 meters), and inhabit coral and rocky reefs.
Maintenance: This fish will readily eat all kinds of live, frozen, and flake foods and algae. Finely chopped meaty foods (like brine shrimp) can be fed regularly. It is best to feed small amounts several times a day. In a reef situation they don't really need to be fed very often at all.
Social Behaviors: Like all damselfish, they can be territorial and aggressive, especially as they get older. Can be kept together and with other larger fish but watch them closely to be sure their aggression doesn't become destructive.
Young Domino Damsels will often live in a comensal relationship with anemones like the one shown here.
Breeding/Reproduction: Some of the damselfish have been bred in captivity.
For more information on the breeding of damselfish, see Marine Fish Breeding: Damselfish.
|Photo courtesy: Joe D|