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    Allen's Damsel - Pomacentrus alleni

    That Fish Place

    Item # 206723 / Manufacturer Part # F91 0007 0244

    Was $16.99
    Now $16.99
     
    Three blue damsels from the Pomacentrus genus are very common in the aquarium trade and all have very similar common names that may even be interchanged in some references, including "Electric Blue Damsel" or "Neon Blue Damsel". These three damsels are the Allen's Damsel (P. alleni), the Yellow Belly Damsel (P. auriventris) and the Neon Damsel (P. coelestis). A few other less common damsels also resemble these three.

    The Allen's Damsel (P. alleni) is metallic blue with an iridescent sheen. The dorsal region may be slightly darker. The anal fin is yellow and the bottom of the base of the tail fin is black. Males are usually more vibrantly colored than females but both are very similar.

    Damsels and chromis both come from the Pomacentridae family, which they share with Clownfish, a close relative and another very popular group of aquarium fish. Their temperament can range from very peaceful to quite aggressive and territorial. Chromis (fish from the genus Chromis) tend to be more peaceful than the rest but can also be more delicate. Other common genuses of damsels include Amblyglyphidodon, Chrysiptera, Dascyllus, Neoglyphidodon, Pomacentrus, Stegastes and others.

    These fish are generally not picky eaters. In the aquarium, they will usually feed on flakes and pellets but should also be given fresh or frozen algae and meaty foods like brine shrimp, mysis shrimp, planktons, krill, shrimp, scallop and similar items.

    Damsels can become very territorial as they become established in the aquarium. Some species will defend their territory especially aggressively; use caution when stocking the aquarium since their small sizes can be deceiving; mature or established damsels may pick on smaller or weaker fish or on new arrivals. Some damsels retain the same appearance throughout their entire lives while others undergo a radical color change as they mature from juveniles to adults. A few may get more colorful as adults but most change from very colorful juveniles to bland, more subdued adults.

    Visit That Fish Blog for more information from our marine biologists on clownfish and damselfish and many other aquarium-related topics!
    Common NameAllen`s Damsel
    Scientific NamePomacentrus alleni
    DifficultyEasy
    Reef SafeYes
    Invert SafeYes
    Community SafeYes
    Max Size (in inches)2
    Min Tank Size (in gallons)30
    OriginIndian Ocean (Andaman Sea)
    Specific Gravity Range1.020-1.024
    pH Range8.0-8.4
    DietOmnivore
    Temperature Range75-82



    Most Frequently Asked Questions:

    Q: Is your livestock covered by any guarantee?
  • Most of our live items are covered by our 5-day Arrive Alive Guarantee. Restricted Items are not covered by this policy for any reason. View the full Livestock Guarantee Policy and Restricted Species list for full details. Any losses must be reported to us within the 5-day guarantee period and we do require verification for any losses.
  • Shipping charges are not covered by our livestock guarantee policy and are non-refundable.

  • Q: When will my Livestock order ship?
  • Live orders (fish, invertebrates) are shipped FedEx Standard Overnight or FedEx Priority Overnight Monday through Thursday for delivery Tuesday through Friday.
  • Live plants and live rock orders are shipped via FedEx 2-day express Monday through Wednesday for delivery Wednesday through Friday. Shipping upgrades to overnight shipping are available for an additional fee.
  • Orders placed before noon (Eastern) are generally shipped the same day. Orders placed after noon are shipped the next shipping day.


  • Q: How much does it cost to have live plants and animals shipped to me?
  • Live Fish/Invert Charges:
  • *Standard Overnight: $34.99
  • Priority Overnight: $44.99
  • Live Aquarium Plant Shipping Charges:
  • FedEx 2-day Plant Shipping: $13.99 (default ship method)
  • *Standard Overnight Plant Shipping: $29.99
  • Priority Overnight Plant Shipping: $39.99
  • Live Rock Shipping Charges:
  • Packages are shipped free via FedEx 2-day Express. You may upgrade the shipping method to Standard Overnight or Priority overnight for an additional charge.
  • Please contact a livestock representative for upgraded shipping quotes at 1-877-367-4377.

  • *Standard Overnight where available only, priority rate may apply. Shipping charges are not covered by our livestock guarantee policy and are non-refundable.


  • Q: How do you ship live plants and animals?
  • Livestock orders are packed and shipped in a separate facility from dry goods and cannot be shipped with dry goods.
  • We make every effort to make transit comfortable and safe for livestock. We review the temperature and destination for every order, and pack the livestock accordingly. Fish and invertebrates are triple-bagged and packed with heat packs or ice packs (as needed) in insulated styrofoam containers and cardboard shipping boxes. Plants are carefully wrapped in wet paper and plastic then shipped in standard FedEx shipping boxes (with heat packs or ice packs as needed).
  • *Heat packs are usually taped to the lid or side of the box. These packets should be discarded after delivery; do not add these packets or their contents to your aquarium.
  • We always attach a copy of your invoice/packing list and our Guarantee Policy inside the box.


  • Q: Where does That Fish Place - That Pet Place ship Livestock?
  • Livestock shipping is available only within the contiguous 48 states (except California). We cannot ship livestock internationally (including Puerto Rico) or to Alaska, Hawaii or California.
  • View our complete list of aquatic plant shipping restrictions.
  • We are unable to ship livestock to APO or PO addresses.


  • Q: Can I specify size, color or sex?
  • Sizes of livestock items offered can vary by supplier, collection area, and time of year. We do not assign specific measurements to live items, but rather general sizes (small, medium, large, XL). If the actual size of a fish or invertebrate you are considering is a concern, please speak directly to a livestock representative to discuss the items you're considering. We do not sell any fish by sex other than those specifically listed as "male" or "female". We cannot guarantee that the fish can be successfully sexed or that the ratio of male/female you request will be available.
  • Please be aware that coloration within species may be quite variable. The specimen you recieve may not look exactly like the representative photo on the site do to these natural variations in color or markings. If you have a request for a specific color in any of our assorted items, you contact the Livestock Mailorder department at 877-367-4377 or livefish@thatpetplace.com. We try to fill special requests when possible, but cannot guarantee the preference.
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