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Scolopsis frenata, commonly known as the Bridled monocle bream, is a species of marine ray-finned fish belonging to the family Nemipteridae, the threadfin breams. It is characterized by its distinctive coloration and a prominent dark stripe or 'bridle' extending from the snout through the eye. This species is a benthic inhabitant of coral reefs and rocky substrates, typically found in tropical and subtropical waters of the Indo-Pacific.
Physical Characteristics
- Body shape
- compressed
- Coloration
- The body is generally silvery-white to pale pinkish, often with a yellowish tint dorsally. A prominent dark brown to black stripe (the 'bridle') runs from the snout, through the eye, and sometimes extends slightly beyond the operculum. The dorsal fin often has a yellow margin, and the caudal fin can be yellowish, sometimes with a reddish tint. Juveniles may exhibit more pronounced banding or spotting.
- Scale type
- ctenoid
- Mouth position
- terminal
- Distinctive features
- Dark 'bridle' stripe from snout through eye, Yellowish dorsal fin margin, Often a yellow caudal fin, A single, strong spine on the suborbital bone, which is characteristic of the genus Scolopsis.
- Dorsal fin
- Single dorsal fin with 10 spines and 9 soft rays. The spinous portion is continuous with the soft-rayed portion.
- Tail fin
- Forked caudal fin, often with pointed lobes.
- Pectoral fin
- Pectoral fins are relatively long and pointed.
- Distinctive fins
- Pelvic fins are thoracic, located directly below the pectoral fins, with 1 spine and 5 soft rays. Anal fin has 3 spines and 7 soft rays.
Identification Tips
Bridle Stripe
Look for the distinct dark stripe running from the snout, through the eye, which is the most reliable identifying feature.
Dorsal Fin Coloration
The yellow margin on the dorsal fin is a good secondary identifier.
Body Shape and Color
Its compressed, silvery-white to pale pinkish body with a yellowish dorsal tint helps distinguish it from other reef fish.
Suborbital Spine
While not always easily visible in the field, the presence of a strong suborbital spine is a key generic characteristic.
Habitat
- Water type
- saltwater
- Depth
- Typically found at depths of 5 to 60 meters (16 to 197 feet), though occasionally deeper.
- Environment
- Associated with coral reefs, rocky bottoms, and sandy or silty areas adjacent to reefs. They often inhabit areas with rubble and seagrass beds, where they can forage for benthic invertebrates.
- Geographic range
- Indo-West Pacific: Red Sea and East Africa to Samoa, north to southern Japan, south to northern Australia and New Caledonia. Absent from the Persian Gulf.
Aquarium Information
- Care level: intermediate
- Temperament: semi-aggressive
- Diet: carnivore
- Minimum tank size: 150 gallons
- Temperature: 24-28°C (75-82°F)
- pH level: 8.1-8.4
- Hardness: 8-12 dKH
- Compatibility: Can be kept with other moderately aggressive to peaceful fish of similar size. Avoid very small or overly aggressive tank mates. May prey on very small invertebrates.
- Special requirements: Requires a well-established aquarium with plenty of live rock for hiding and foraging. A sand bed is beneficial as they often sift through it for food. Good water quality and stable parameters are crucial.
Wild Information
- Conservation status: least concern
- Seasonality: No specific seasonal patterns for availability; caught year-round in its range.
- Market price: Low to moderate
- Commercial importance: low
- Taste: Mild, white flesh
- Texture: Flaky, firm
- Cooking methods: Frying, Grilling, Steaming, Baking
- Nutritional value: Good source of protein and omega-3 fatty acids.
Key Facts
Name Origininteresting
The specific epithet 'frenata' comes from Latin, meaning 'bridled', referring to the distinctive dark stripe across its eye.
Dietary Habitsbehavior
Bridled monocle breams are primarily carnivorous, feeding on a variety of benthic invertebrates such as small crustaceans, worms, and mollusks, which they often extract from sandy or silty substrates.
Social Behaviorbehavior
They are typically observed as solitary individuals or in small, loose aggregations, rather than large schools.
Habitat Preferencebehavior
While often found near reefs, they show a preference for areas with mixed sand, rubble, and seagrass, indicating their foraging strategy involves sifting through soft substrates.
Safety Information
Handle with care- Safety level: caution
- Venomous: No
- Edibility: edible
- Handling notes: While not venomous, like many reef fish, Scolopsis frenata possesses sharp fin spines (dorsal, anal, and pelvic) that can inflict painful punctures if handled carelessly. Care should be taken when handling to avoid injury. The suborbital spine can also be sharp.
Similar Species
Pearly monocle bream
Scolopsis margaritifera
Scolopsis margaritifera lacks the prominent dark 'bridle' stripe. It typically has a more uniform body coloration, often with pearly spots or lines, and a dark blotch on the upper caudal fin base.
Yellowfin monocle bream
Scolopsis taenioptera
Scolopsis taenioptera has a more pronounced yellow coloration on its fins, particularly the caudal fin, and usually exhibits a series of faint longitudinal stripes on its body, rather than a single prominent bridle stripe.
Oblique-barred monocle bream
Scolopsis lineata
Scolopsis lineata is characterized by distinct oblique dark bars or stripes on its body, which are absent in S. frenata. It also lacks the prominent dark bridle through the eye.
Scientific Classification
- Kingdom
- Animalia
- Phylum
- Chordata
- Class
- Actinopterygii
- Order
- Perciformes
- Family
- Nemipteridae
- Genus
- Scolopsis
- Species
- Scolopsis frenata
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