Gem Tang (7 days for Delivery)
Earns 1,999 Aqua Points, worth £19.99 off a future order. How points work
- Arrive alive guarantee
- Overnight, oxygen packed
- You pick the day
Livestock delivery, done properly
- Overnight insulated delivery on fish orders, £19.95, and free collection near Gatwick
- Arrive-alive promise plus our Perfect Health Arrival guarantee
- You choose the delivery day at checkout. We only show days we can genuinely deliver
- £35 minimum on livestock orders. Dry goods ship free alongside fish
Marine Fish Perfect Health Promise
All marine fish have a Perfect Health Arrival guarantee. For the following reasons, we cannot guarantee beyond that.
A number of different reasons can affect why a marine fish does not settle into its new environment. These range from:
- Unsuitable water conditions: incorrect pH, high ammonia and nitrite levels.
- Tank bullies: some marine fish are very passive and will not mix well with more boisterous tank mates.
- Incorrect tank size: please research the fish you are buying, as some will become stressed in a tank that is too small.
If you have any problems on arrival
Please contact us straight away and we will extend your guarantee until the fish is healthy again. You must call on the arrival day to activate this.
01293 749046Credit notes
If any of your aquatic life dies during our guarantees and has been acclimatised in a mature aquarium, please take a photo and email it across and we will send you a credit note.
Please email photographs of the deceased specimens to sales@aquaticstoyourdoor.co.uk.
About this fish
THIS ITEM IS AVAILABLE BUT DELIVERY IS 7 DAYS FROM ORDER. PLEASE SELECT A DELIVERY DATE TO REFLECT THIS
Gem Tang (Zebrasoma gemmatum)
What is its maximum size?
The Gem Tang can grow to approximately 20–22 cm (8–9 inches) in length. It requires a large, mature aquarium with plenty of open swimming space, live rock for grazing and excellent water quality. Although smaller than many other tang species, it is an active swimmer and needs plenty of room.
Where is its origin and where is it exported from?
The Gem Tang originates from the Western Indian Ocean, particularly around Mauritius, Réunion, Madagascar and surrounding islands. It is commonly exported for the aquarium trade from Mauritius and other Indian Ocean locations where collection is permitted. It is considered a relatively rare and highly sought-after species in the marine aquarium trade.
Is it reef compatible?
Yes, generally reef safe. It is primarily an algae grazer and is usually safe with corals and most invertebrates. It can occasionally nip at certain sessile invertebrates, although this is not typical behaviour.
What should I feed it?
Feed a varied diet consisting mainly of marine algae and seaweed, including nori, supplemented with spirulina flakes, algae-based pellets and occasional meaty foods such as mysis shrimp. Provide regular feedings throughout the day to encourage natural grazing behaviour and maintain good health and condition.
How many can I keep?
Best kept singly in most home aquariums. Gem Tangs can be territorial, particularly towards other tangs and fish with similar body shapes. Keeping multiple individuals is possible in exceptionally large systems with careful introduction, but is generally not recommended for typical home aquariums.
How compatible is it with other fish?
Generally suitable for a large marine community aquarium when housed with compatible tankmates. It can display territorial behaviour towards other tangs, particularly other Zebrasoma species. Avoid keeping it with overly aggressive fish or species that compete for territory. It generally does well with peaceful to moderately assertive marine fish.
Water parameters
Temperature: 24–28°C
pH: 8.1–8.4
Specific gravity: 1.023–1.026
Ammonia and nitrite: 0 ppm
Nitrate: Keep as low as practical with stable water quality.
If it does not arrive alive, you do not pay for it.
Photograph the bag unopened, send it to us within four hours of delivery, and we will put it right with a refund or a replacement.* Our guarantee on marine fish covers their health on arrival. If anything concerns you, please ring us on the day they arrive and we will extend it until the fish is healthy again.
*Whether we refund or replace is our decision and depends on the fish and its cost. A replacement may travel with a future order rather than straight away.