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Blue Devil DamselDevilfishFamily: PomacentridaeWMD_Ap15AD.jpg) Chrysiptera cyaneaPhoto © Animal-World: Courtesy Hiroyuki TanakaLatest Reader Comment - See More I can't believe that there are still people who use these fish to cycle their tanks! There is no need to torture fish just to speed things along for youself. Any... (more) Dave Lowry Many folks like the purity and beauty of the Blue Devil Damsel and this is perhaps one of the most popular of the damselfishes.Blue Devil Damsel Contents The Blue Devil available in a pet store may often be a juvenile that has not yet come into its adult coloration. As they mature the males develop yellow-orange tail colors as you can see in the picture above. Females will gain a black spot at the base of the hindmost dorsal ray. As they mature many damselfish are noted for becoming rather aggressive and are best not kept with smaller or overly passive tank mates. This species is no exception, it is rather territorial and somewhat aggressive. Specimens of this species can be risky if kept together for they may seriously fight causing severe damaged or death. Providing a rock/ coral decor that has many nooks and crannies for hiding and retreat will help avert aggression. These can possibly be kept in groups if you are careful to have a good male to female ratio and keep a close eye out for trouble. In the wild, there will be several females to one male. For more Information on keeping this fish see: |
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Habitat: Natural geographic location: The Blue Devil is found throughout the Indo-Pacific region; on the northern portion of the Great Barrier Reef, Indonesia to Solomon and Mariana Islands, north to Ryukyu. They are seen at depths between 1 - 33 feet (.03 - 10 meters).
Status: These fish are not listed on the IUCN Red List.
Maintenance difficulty: The Blue Devil is among the easiest of all marine fish to keep.
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.
Foods: All kinds. See "maintenance" above.
WMD_C031_med.jpg) Female Photo © Animal-World |
Social Behaviors: Like all damselfish, they can be territorial and aggressive, especially as they get older. These can be kept in groups if you are careful about the sex ratio, one male to several females. Can be kept with other larger fish but watch them closely to be sure their aggression doesn't become destructive.
Sex: Sexual differences: Blue Damselfish are sexually dimorphic. The females are entirely blue without any yellow or orange coloration, some females depending on localities have a black ocellus on the lower posterior part of the dorsal fin. Also they have nearly translucent fins (see photo at the top of this page), versus totally blue fins in males. There is more information here: The Devils We Should Love .
Light: Recommended light levels: No special requirements.
Breeding/Reproduction: Some of the damselfish have been bred in captivity. See general breeding techniques under Clownfish on the marine breeding page.
| The Devils We Should Love! Article By: Hiroyuki Tanaka, Japan  This is the story of the Blue Devil ...that is also popularly known as the Blue Damselfish... "Damselfishes are well-known even to laymen world-wide and the species list still is growing, 320 species were  |
Temperature: No special requirements.
Length/Diameter of fish: Blue Devil adults can grow to 6.0 cm ( 2.4 inches).
Minimum Tank Length/Size: A minimum 10 gallon aquarium is recommended if this is the only fish to be kept in it.
Water Movement: Weak, Moderate, Strong No special requirements.
Water Region: Top, Middle, Bottom Swims at all levels of the aquarium.
Availability: This fish is readily available.
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