Bluespine unicornfish
📖 Overview
Adults inhabit channels, moats, lagoon and seaward reefs with strong surge . Benthopelagic . Typically occurring in small groups. Sometimes solitary . Juveniles in shallow protected bays and harbours . Mainly diurnal, feed on coarse leafy brown algae like Sargassum. Pair-spawning has been observed. Minimum depth reported taken from Ref. 128797.
🔬 Taxonomy
🐟 Physical Description
Dorsal spines (total): 6; Dorsal soft rays (total): 27 - 30; Anal spines: 2; Anal soft rays: 27 - 30. This species is characterized by the following: body depth vary from about 2.0 in SL (in subadults) to 2.4-2.6 (adults) in SL; with a tapering, bony, horn on forehead of adults projecting anteriorly at level of eye but not extending in front of mouth (horn first as a bump on forehead at a length of about 12 cm); dorsal profile from snout to horn straight, angle of about 45°; 2 peduncular plates with well-developed forward-curving knife-like spines; emarginate caudal fin when young, truncate with filamentous lobes in adult; males apparently with longer horn, larger peduncular keels and longer caudal filaments than females of the same size; body yellowish to olivaceous gray dorsally, paler ventrally, with blue peduncular plates and keel spines; lips whitish or blue; blue area is sometimes present around pectoral fin; dorsal and anal fins yellowish with narrow blue margins; caudal fin orangish basally, shading to gray, with a broad, pale greenish posterior border and caudal filaments are edged in blue; one transient color phase is a blotchy pale greenish zone below the spinous portion of dorsal fin that narrows and ends beneath the pectoral fin .: short and / or deep; Cross section: compressed.
🌀 Behaviour
Behavioural data for Bluespine unicornfish is currently being reviewed.
🦐 Diet
🥚 Reproduction
Spawn in pairs .
🌍 Habitat & Distribution
Marine; reef-associated; depth range 0 - 180 m . Tropical; 26°C - 29°C ; 35°N - 33°S, 30°E - 128°W East Africa (Ref.
🌿 Ecology
coarse leafy brown algae like Sargassum
📐 Morphometrics
🌡️ Water Parameters & Tolerance
🛡️ Conservation Assessment
📊 Population Risk & Fisheries
🎣 Angling Guide
- medium-heavy 7ft spinning rod
- 30-50 lb braid
- fluorocarbon leader
- grass flats
- oyster bars
- marsh drains
- deeper channel edges
Use barbless hooks, minimise air exposure, and revive fish head-first in current before release.
⚠️ Slot limits protect breeding-size fish. Verify daily bag limits.
🍽️ Edibility & Flavour
"Bluespine unicornfish 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 | 18.4 g |
| Omega-3 (total) | 109 mg |
🔬 Mercury Safety
Mercury data for Bluespine unicornfish 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-spine nosefish · Blue-spine unicornfish · bluespine unicornfish · brown unicornfish · Brown Unicornfish, Bluespine unicornfish · Humphead Unicornfish · Long-snouted nosefish · Long-snouted unicornfish · Longhorn Unicornfish · Longnose Unicornfish · Unicorn Tang |
| 🇩🇰Danish | Blåpigget Næsehornsfisk |
| 🇫🇷French | Corne · Dawa · Dawa, Licorne, Nason vert · Licorne · Nason à Eperons Bleus · Nason brun · Nason Vert |
| 🇯🇵Japanese | Tenguhagi · テングハギ |
| 🌍MSA | Debam |
| 🇵🇹Portuguese | Rufia Espigão Azul |
| 🇷🇺Russian | однорогая рыба носорог · Рыба-единорог |
| 🇪🇸Spanish | Barbero de Aguijón Azul · Berbero de Aguijon Azul |
| 🇸🇪Swedish | Noshörningsfisk |
| 🌍TAH | ume, ume paa (Iles Sous le Vent) |
Scientific Synonyms
| Scientific Name | Author | Year | Status |
|---|---|---|---|
| Acanthurus unicornis | Forsskål | 1775 | Synonym |
| Acronurus corniger | Gronow | 1854 | Synonym |
| Chaetodon unicornis | Forsskål | 1775 | Synonym |
| Harpurus monoceros | Forster | 1844 | Synonym |
| Monoceros biaculeatus | Bloch & Schneider | 1801 | Synonym |
| Naso fronticornis | Lacepède | 1801 | Synonym |
| Naso unicornus | Forsskål | 1775 | Synonym |
🦠 Common Diseases
The following diseases are known to affect Bluespine unicornfish.
🔍 Similar Species
🗺️ Global Occurrence Map
Occurrence records from the Global Biodiversity Information Facility (GBIF) - 21 records indexed .
👥 Community & Contribute
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