
Twotone tang (Zebrasoma scopas) - Marine Aquarium Livestock UK
24–27°C · pH 8.1–8.4 · 500L

Sailfin Tang (Zebrasoma veliferum) for large mature marine aquariums with open swimming room, live rock grazing and algae-rich feeding.
Adult size is the maximum length this species reaches at full maturity (scientific sources). The livestock you receive will be younger and smaller — pick a size variant above for the actual shipping size. Photos are AI-enhanced, so the animal may show subtle colour or marking differences.
Zebrasoma veliferum
Sailfin Tang (Zebrasoma veliferum) for large mature marine aquariums with open swimming room, live rock grazing and algae-rich feeding.
Adult size is the maximum length this species reaches at full maturity (scientific sources). The livestock you receive will be younger and smaller — pick a size variant above for the actual shipping size. Photos are AI-enhanced, so the animal may show subtle colour or marking differences.
Maintain these water conditions for optimal health and vibrant colors
The Sailfin Tang (Zebrasoma veliferum) is a large, high-profile marine surgeonfish with tall sail-like dorsal and anal fins, bold striping, and constant grazing behaviour. This listing is for SKU MW09, the Petra Aqua medium Sailfin Tang line, matched to the exact Shopify variant and current live stock record.
This is not a small display fish for a new marine tank. Public species references and supplier data point to a fish that can reach around 40 cm, so the responsible way to buy it is to plan for adult size, swimming room, oxygenation, algae-based feeding, and tang compatibility from the start. Many aquarium sources and trade listings still use Zebrasoma veliferum; FishBase and several taxonomy references use or support Zebrasoma velifer. The page keeps the familiar trade spelling in the title while noting the accepted-name context so customers and search systems can connect both names.
| Scientific name used in trade | Zebrasoma veliferum |
|---|---|
| Accepted-name context | Often treated as Zebrasoma velifer in taxonomy sources |
| Common names | Sailfin Tang, Pacific Sailfin Tang, Sailfin Surgeonfish |
| Adult planning size | Up to about 40 cm |
| Aquarium type | Large mature marine aquarium or reef system |
| Care level | Moderate to experienced marine care |
| Temperament | Semi-aggressive, especially with similar tangs |
| Diet | Herbivore; algae, nori and spirulina-rich foods are central |
| Reef suitability | Usually reef compatible, with space and feeding cautions |
Plan the aquarium around movement first. A Sailfin Tang needs a long, mature marine system with open lanes for cruising, strong biological filtration, high oxygen, and enough live rock to provide grazing surfaces and shelter without filling the whole footprint. For long-term adult care, a large 6 ft style footprint is far more appropriate than a compact cube. Around 680-800 litres is the responsible adult planning range; smaller juvenile systems may work temporarily only when there is a clear upgrade plan.
Keep water stable and well oxygenated. A practical target is 24-28C, pH 8.1-8.4, and marine salinity around 1.022-1.026. Strong flow, efficient skimming or filtration, low dissolved waste, and regular water changes matter because active tangs eat heavily and produce waste. Avoid cramped rock piles that create constant territorial pressure. Give the fish room to turn, graze, hide, and move away from other fish.
Sailfin Tangs are algae-focused grazers. Nori or marine algae sheets, spirulina-based flakes or pellets, and herbivore marine foods should form the core routine. Occasional frozen foods can be useful, but they should not replace vegetable matter. A tang that is fed like a general carnivorous community fish is more likely to lose condition, become irritable, or develop poor colour and lateral-line problems over time.
Feed in a way that mimics grazing. Smaller repeated offerings are better than one heavy dump of food, especially in a busy reef. Clip algae where the fish can browse calmly, watch belly shape, and make sure faster or more aggressive fish are not taking everything. A well-fed Sailfin Tang is usually easier to manage around tank mates than one that is underfed and forced to defend every grazing surface.
This species can be calm with many unrelated marine fish, but it is still a surgeonfish with a strong sense of space. It may challenge other tangs, other Zebrasoma, or similarly shaped algae grazers, especially in smaller systems. In a normal home aquarium, keep one Sailfin Tang unless you have a very large system and a deliberate tang-introduction plan. If mixing tangs, introduce carefully, break up sight lines, and be ready to separate fish if serious chasing starts.
The tail base carries the surgeonfish scalpel spine, so handling and fish-on-fish disputes can cause real injury. Use calm capture methods and avoid hand-catching. Around corals and invertebrates, the Sailfin Tang is normally considered reef compatible, but the practical wording is reef safe with caution. Large active tangs can knock loose corals while swimming, and hungry individuals may investigate soft tissue or some invertebrates. Good feeding, space, and secure coral placement reduce the risk.
Before dispatch, check that the aquarium is mature, spacious, and stable. Confirm salinity, temperature, pH, nitrate trend, oxygenation, and the current behaviour of any resident tangs or assertive fish. On arrival, keep lights low, temperature-acclimate the sealed bag, then acclimate gradually to your tank salinity. Add the fish without a long chase, keep food available once it settles, and watch breathing, colour, fins, grazing and tank-mate reactions through the first week.
Livestock is packed carefully and sent by UK live-animal courier where the service is available. The Tropical Fish Co Live Arrival Guarantee applies when the delivery and acclimation terms are followed, and first-time customers can use WELCOME10 where eligible. Those details are included naturally here for buyer confidence; the main success factor is still having the right adult-size marine system ready.
Choose the Sailfin Tang if you want a centrepiece marine grazer for a large, mature aquarium and you are prepared to feed algae daily, manage tang temperament, and plan around adult size. It suits reef keepers and fish-only marine keepers who already understand water stability and space planning. If the tank is young, small, lightly filtered, or already crowded with tangs, choose a smaller marine fish instead.

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