Chromis - Black Bar (Chromis retrofasciata) - Marine World Aquatics

Quick View

Chromis Black Bar (Chromis retrofasciata) - PRE-ORDER to Collect in store or delivery to UK mainland for just £19.95! Order online by Tuesday 8pm and collect in-store or have it...
Regular price £8.50

Collection: Fish

Chromis Black Bar (Chromis retrofasciata) - PRE-ORDER to Collect in store or delivery to UK mainland for just £19.95! Order online by Tuesday 8pm and collect in-store or have it delivered the following Thursday

The Black-bar Chromis has a very delicate balance of color. A pronounced horizontal black stripe over it's posterior is set against a yellowish to tan body. Juveniles sport a subtle touch of neon blue encircling the eye and etched along the bottom fins and the underside of the tail.
There are few fish it can be confused with. Other damsels may have the same coloring, but always lack the vertical black bar at the back of the body. Other common names they are known by include Black Back Chromis and Blackbar chromis, and in Australia they are called a Blackbar Puller.
This diminutive fish reaches only just about 2 inches (6 cm) in length. It is one of the few Chromis that are found alone in the wild. Many other Chromis species like to form very large schools, yet this species is happy alone or with just 2 or 3 friends to hang out with. The same is true in captivity. Chromis do not form bonded pairs and several males and females will breed with other males and females. Males will guard the nest until the eggs hatch.
Along with its nice coloring it has a nice personality and is inexpensive. Though designated as a true damselfish, they are not very aggressive, and so make a great choice for most tanks. Unlike other genera in the damselfish family, Chromis are better tempered and tend to be the ones that are picked on. Though they are not overly aggressive, they can get testy in cramped quarters, even with their own kind.

Best Place To Buy Marine World Aquatics

We are extremely confident in the health of all livestock we send out and combined with our shipping methods offer your our Live Arrival Guarantee. In order to eligible for our Live Arrival Guarantee, please note the following:
YOU MUST ADHERE TO THE FOLLOWING DOA (DEAD ON ARRIVAL) PROCEDURE CORRECTLY, FAILING TO DO SO WILL NULIFY YOUR CLAIM.
In the unlikelihood of your order being DOA please email or telephone us within 1 hour of signing for the package on day of receipt.
EMAIL: info@marine-world.co.uk (leave a telephone number to call you back on)
TEL: 07779162162 / 01274416425
Once you have notified us you then have 24 hours to provide us with the following photographic evidence:
For marine fish we require:
  • A clear photograph of the fish in its original sealed bag, you must capture the entire bag with contents and seal still in tact clearly evident before taking the 2nd picture.
  • A clear photograph of the fish out of its sealed bag and water, with its entire rear caudal tail fin cut off.
  • You will know if your fish is dead as it will sink down to the bottom, observe for fin movement and discolouration, most fish sink when they die, but float to the top as they begin to rot. Closely observe the aquatic life upon acclimatising if it hasn’t moved don’t presume its dead but sometimes they are just resting. We advise to add air stone to acclimatising this will increase oxygen level to your live stock. Monitor the fins and gills for any sort of tiny movements, if in doubt call us.
For marine inverts we require:
  • A clear photograph of the fish in its original sealed bag, you must capture the entire bag with contents and seal still in tact clearly evident before taking the 2nd picture.
  • A clear photograph of the marine invert out of its sealed bag and water, with the invert being either cut in half or a sharp object such as a small knife skewered directly through it.
For corals we require:
  • A clear photograph of the fish in its original sealed bag, you must capture the entire bag with contents and seal still in tact clearly evident before taking the 2nd picture.
  • A close up photograph of the coral out of its sealed bag but still in water, (Photographs taken of corals not in water, will not be accepted, as some corals can look distorted/dead out of water).
  • All photographs need to be clear and not distorted. Photographs that do not clearly show their subject will be unable to be accepted as evidence.
  • Failure to be present to sign for your parcel on the first delivery attempt will void all claims. Failure to follow Marine World Aquatics specified DOA reporting procedure will also void any claims.
  • On satisfactory evidence that the marine life is DOA a credit note will be issued.
Please see review our recommended acclimatisation procedures for corals below to ensure your new coral adjusts to your system with the least possible stress.
Acclimatising your new corals is a vital process to ensure they survive and thrive in your system. People use many different methods but most of them are very similar, below is our preferred choice:
  • Unpack coral carefully from box and keep it in the polythene bag or container that it was shipped in.
  • Float the bag or container in your sump area or main tank for around 20 minutes, this will equalise the temperature of the water in the bag to that of the system it is going to be placed.
  • Open the bag or place coral with shipping water into another small container.
  • Using a piece of airline or similar with an air control valve attached, if one not available then just tie a knot in the airline, start a siphon from the main system and drip water slowly from there into the bag/container housing the new coral ( I use around one drip per two seconds ). Once the bag/container is near full then disregard some of the water and continue the process (never put any of the shipping water into your system). I persevere with this process for around 90 minutes to ensure the new coral is fully acclimatised to the new water conditions.
  • Now it is time to remove the coral from bag/container and carefully place it in your tank somewhere near the bottom. Leave it there and raise it slowly over a period of days so as it can adjust to the different lighting on your tank.
This careful process is vital to ensuring your coral or any other livestock’s long term success.
The same above process can be use for Fish and Inverts however this is not recommended, we strongly advise you put all livestock into a quarantine tank for 30 days where you can observe it before placing it into your display tank, make sure you follow the above procedure before placing livestock into your quarantine tank
We accept all Paypal & all Credit Cards.