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Humbug Damselfish FISH STATS

Humbug Damselfish - Humbug Damselfish

Other Damselfishs»

Scientific Name:Dascyllus aruanus
Origin:Red Sea, Indian and Pacific oceans

Humbug Damselfish Species Profile

Known by multiple common names, such as humbug damselfish, three-striped damselfish and white-tailed damselfish, Dascyllus aruanus is a feisty little fish that adapts well to aquarium life. Humbug damselfish can be pugnacious and are better introduced at the latter stages of setting up a marine fish community.

Difficulty level: The humbug damselfish is tough and forgiving. The humbug damselfish is considered a good “starter” fish for anyone entering marine fishkeeping for the first time.

Hardiness: The humbug damselfish tolerates a range of water conditions, from passable to pristine. However, it is the responsibility of all aquarists to ensure that their fishes receive the best possible living conditions that can be provided — anything less wouldn’t be fair to these fish.

Physical description: The humbug damselfish tops out at about 4 inches in total length. Sporting three broad black stripes on a white body, the humbug damselfish has a zebralike appearance. The stripes run slightly off vertical through the eyes and mouth, midbody and bisecting the caudal peduncle, making it half black and half white. The caudal fin is clear, which distinguishes it from the black-tailed damselfish (D. melanurus), which looks nearly identical except for its namesake black caudal fin. Male and female humbug damselfish can be virtually the same size and coloration at maturity; however, the sexes can be distinguished through visually examining their respective genital areas.

Climate and range: Dascyllus aruanus ranges throughout much of the Indian and Pacific oceans and in the Red Sea. The humbug damselfish does not occur in the Atlantic Basin. The humbug damselfish is a tropical reef fish that is most often found in aggregations in the vicinity of branching corals.

Compatibility: The humbug damselfish can be quite territorial in aquaria and will aggressively defend. For this reason, the humbug damselfish should be stocked after other fish are already established; the humbug damselfish should also be kept with other fish of similar size and temperament. Individual humbug damselfish should have a cave or branching coral specimen to call its own. You’ll want to make sure that each humbug damselfish has enough room, as they will fight among themselves as well as harass other fish. The humbug damselfish is considered reef-safe, but it has been reported to nip at hermit crabs and shrimp. If new to the aquarium hobby, I recommend the humbug damselfish be kept in an aquarium all to themselves. If you want to establish the humbug damselfish as part of a fish community later, purchase another aquarium and introduce it only after the other fish have become established.

Aquarium conditions: While often used to cycle new marine aquarium setups, the humbug damselfish still does best when kept in optimal water conditions with slight to medium flow. The water temperature for the humbug damselfish should be maintained between 75 and 82 degrees Fahrenheit; another website recommends they be kept in water temperatures of 72 to 78 degrees. Other parameters include pH of 8.1 to 8.4; dKH 8 to 12; specific gravity 1.019 to 1.026.

Care considerations: The humbug damselfish can be kept by itself in setups of as little as 10 gallons, but a minimum aquarium size of 30 gallons is recommended. The humbug damselfish needs to have plenty of crevices in the rockwork in which to occasionally hide and feel secure. Being diurnal the humbug damselfish also uses crevices or small caves in the rockwork to turn in for the night.

The humbug damselfish is an omnivore and eats a variety of foods in the wild. A varied diet of meaty frozen foodstuffs, algae-based foods and commercial flake will keep the humbug damselfish healthy and active.

Breeding in aquaria: The humbug damselfish is among the handful of marine fishes hobbyists have successfully bred, produced and reared offspring from in aquaria. The male humbug damselfish cares for the fertilized eggs until the pelagic fry take up residence in the aquarium’s water column. Remove as many of the humbug damselfish fry as you want to try and raise to a rearing aquarium, with an absence of adult fish and invertebrates that might look upon the young fish as tasty morsels for the taking. Dascyllus aruanus is a worthy first-time breeding project for up-and-coming marine aquarists.


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