Twotone tang
📖 Overview
Adults occur in coral-rich areas of lagoon and seaward reefs. They graze on algae, usually in groups of 20 individuals . Adults usually in small groups and sometimes schooling. Juveniles solitary and usually among corals . Their numerous, small pharyngeal teeth may have evolved in response to a shift in diet from macroalgae to filamentous algae . Mature individuals form resident spawning aggregations . Monogamous . Group and pair spawning have been observed. The flesh is never poisonous . Minimum depth reported taken from Ref. 128797.
🔬 Taxonomy
🐟 Physical Description
Dorsal spines (total): 4 - 5; Dorsal soft rays (total): 23 - 25; Anal spines: 3; Anal soft rays: 19 - 21. Dark brown (body in life with fine pale blue-green longitudinal lines following scale rows, becoming dots anteriorly on body and on head) (Ref 9808). Small juveniles have yellowish bars and more prominent yellow specks than adults. : short and / or deep.
🌀 Behaviour
Behavioural data for Twotone tang is currently being reviewed.
🦐 Diet
🥚 Reproduction
Form resident spawning aggregations . Monogamous mating is observed as both facultative and social .
🌍 Habitat & Distribution
Marine; reef-associated; non-migratory ; depth range 0 - 60 m , usually 1 - 60 m . Tropical; 25°C - 28°C ; 31°N - 34°S, 32°E - 124°W East Africa, including the Mascarene Islands (Ref.
🌿 Ecology
📐 Morphometrics
🌡️ Water Parameters & Tolerance
🛡️ Conservation Assessment
📊 Population Risk & Fisheries
🍽️ Edibility & Flavour
"Twotone tang is an edible species."
- Clear, bright eyes — cloudy eyes indicate age
- Firm flesh that springs back when pressed
- Fresh ocean smell, never strong or ammonia-like
- Bright red or pink gills, not grey or brown
- Shiny, moist skin with scales tightly attached
- Cloudy or sunken eyes
- Strong fishy or ammonia odour
- Soft, mushy flesh that doesn't spring back
- Discoloured or dry flesh
⚡ Nutrition
Per 100g cooked - Source: USDA FoodData Central
| Nutrient | Amount |
|---|---|
| Protein | 17.8 g |
| Omega-3 (total) | 126 mg |
🔬 Mercury Safety
Mercury data for Twotone tang has not yet been assigned. Please consult FDA/EPA guidance for general seafood safety advice.
🌿 Sustainability
🔬 Full Nutritional Profile
Per 100g - Raw, per 100g - Source: USDA FoodData Central templates (generic fish average)
📊 Population Dynamics
| Year | Region | Index | Notes |
|---|---|---|---|
| - | - | - |
🌐 Names & Taxonomy
| Language | Common Names |
|---|---|
| 🇬🇧English | Blue-lined Tang · Bluelined Sailfin Tang · Brown Sailfin Surgeonfish · Brown Sailfin Tang · Brown Tang · Brown sailfish surgeonfish · Brown sailing tang · Brushtail Surgeonfish, Twotone tang · Brushtail Tang · Scopas Tang · Sombre Surgeon-fish · Two-tone Surgeon · Two-tone Surgeonfish · Yellow sailfin tang · twotone tang |
| 🌍AFR | Tweekleurtang |
| 🏳️Catalan | Peix cirurgià coral·lí |
| 🌍CES | bodlok hnědý |
| 🇩🇰Danish | Røgfarvet Kirurgfisk |
| 🇩🇪German | Brauner Segeldoktorfish · Brauner Segelflossen-Doktor · Weißdorn-Segelflossendoktor |
| 🌍DIV | Dhunfaiy mas |
| 🌍EST | Pruun sebrasoom |
| 🇫🇮Finnish | Ruskovälskäri |
| 🇫🇷French | Chirurgien Brun · Chirurgien balai · Chirurgien balai, Chirurgien à robe sombre · Chirurgien voile brune · Chirurgien à Brosses · Chirurgien à Robe Sombre · Chirurgien à balai · Chirurgien-voile brun |
| 🌍IND | Burung laut |
| 🇮🇹Italian | Pesce chirurgo marrone |
| 🇯🇵Japanese | Gomahagi · ゴマハギ |
| 🌍LIT | Baltadyglė chirurgžuvė |
| 🌍MSA | Debam · Debam perang · Debam-layar perang · Dengkis |
| 🇵🇹Portuguese | Canivete Bicolor · Cirurgião-marrom |
| 🇪🇸Spanish | Pez Cirujano Café |
| 🌍TAH | peretiti |
| 🌍THA | ปลาขี้ตังเบ็ดดำ |
| 🌍VIE | Cà Đuôi gai nâu hong |
| 🇨🇳Chinese | 小高鰭刺尾鯛 |
Scientific Synonyms
| Scientific Name | Author | Year | Status |
|---|---|---|---|
| Acanthurus altivelis | Valenciennes | 1835 | Synonym |
| Acanthurus ruppelii | Bennett | 1836 | Synonym |
| Acanthurus scopas | Cuvier | 1829 | Synonym |
| Acanthurus suillus | Cuvier | 1829 | Synonym |
| Zebrasoma scopes | Cuvier | 1829 | Synonym |
| Zebrasoma scopoas | Cuvier | 1829 | Synonym |
| Zebrasoma supraalba | Fowler | 1946 | Synonym |
🦠 Common Diseases
The following diseases are known to affect Twotone tang.
🔍 Similar Species
🗺️ Global Occurrence Map
Occurrence records from the Global Biodiversity Information Facility (GBIF) - 22 records indexed .
👥 Community & Contribute
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