Scolopsis bilineata  (Bloch, 1793)

Two-lined monocle bream
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Scolopsis bilineata   AquaMaps   Data sources: GBIF OBIS
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Image of Scolopsis bilineata (Two-lined monocle bream)
Scolopsis bilineata
Picture by Patzner, R.

Classification / Names Common names | Synonyms | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa

Actinopterygii (ray-finned fishes) > Perciformes (Perch-likes) > Nemipteridae (Threadfin breams, Whiptail breams)
Etymology: Scolopsis: Greek, skolex = worm + Greek, opsis = appearance (Ref. 45335).

Environment / Climate / Range Ecology

Marine; reef-associated; depth range 1 - 25 m (Ref. 9710).   Tropical; 32°N - 36°S, 66°E - 176°W (Ref. 3810)

Size / Weight / Age

Maturity: Lm ?  range ? - ? cm
Max length : 23.0 cm TL male/unsexed; (Ref. 9710); common length : 13.0 cm SL male/unsexed; (Ref. 3810)

Short description Morphology | Morphometrics

Dorsal spines (total): 10; Dorsal soft rays (total): 9; Anal spines: 3; Anal soft rays: 7. Some geographical variations, especially different between Indian and Pacific Oceans; Pacific form with yellow stripes and yellow dorsal fin, while the Indian ocean form lacks the yellow (Ref. 48635). Head scales reaching to or just in front of anterior nostrils. Lower limb of preopercle scaly. Antrorse (forward-directed) suborbital spine present beneath eye. Pelvic fins long, reaching to or almost to level of origin of anal fin. Axillary scale present. Upper part of body olive or greyish-brown, pearly-white below. 2 narrow yellow stripes on head, another dark red-edged pearly-white stripe from mouth to base of soft dorsal fin. A yellow mid dorsal stripe from above ayes along base of dorsal fin. A whitish patch just below base of posterior half of soft dorsal rays. Juveniles with 3 dark brown stripes on upper part of body, interspaces between stripes yellow.

Distribution Countries | FAO areas | Ecosystems | Occurrences | Introductions | Faunafri

Indo-West Pacific: Maldives (Ref. 11303) and the Laccadive Islands to Fiji, north to southern Japan, south to Lord Howe Island. Recently reported from Tonga (Ref. 37816).

Biology     Glossary (e.g. epibenthic)

Common on coral reefs. Adults occur on most reef habitats, usually in pairs, and juveniles inshore or in lagoons or rubble zones (Ref. 48635). Occurs singly or in small aggregations. Feeds on small fishes and benthic invertebrates. A protogynous hermaphrodite (Ref. 9785).

Main reference Upload your references | References | Coordinator | Collaborators

Russell, B.C., 1990. FAO Species Catalogue. Vol. 12. Nemipterid fishes of the world. (Threadfin breams, whiptail breams, monocle breams, dwarf monocle breams, and coral breams). Family Nemipteridae. An annotated and illustrated catalogue of nemipterid species known to date. FAO Fish. Synop. 125(12):149p. Rome: FAO.

IUCN Red List Status (Ref. 90363)

  Not Evaluated 

Threat to humans

  Harmless




Human uses

Fisheries: subsistence fisheries; aquarium: commercial
FAO(Publication : search) | FisheriesWiki | Sea Around Us

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Internet sources

BHL | Cloffa | Websites from users | Check FishWatcher | CISTI | Catalog of Fishes (gen., sp.) | DiscoverLife | Faunafri | Fishtrace | GenBank(genome, nucleotide) | GOBASE | Google Books | Google Scholar | Google | IGFA World Record | iSpecies | National databases | PubMed | Scirus | SeaLifeBase | Tree of Life | uBio | Wikipedia(Go, Search) | World Records Freshwater Fishing | Zoological Record

Estimates of some properties based on empirical models

Phylogenetic diversity index (Ref. 82805):  PD50 = 0.5000   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01329 (-0.09171 - 0.11830), b=3.05 (2.98 - 3.12), based on LWR estimates for species & family-BS (Ref. 93245).
Trophic Level (Ref. 69278):  3.6   ±0.50 se; Based on food items.
Resilience (Ref. 69278):  High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.).
Vulnerability (Ref. 59153):  Low vulnerability (22 of 100) .
Price category (Ref. 80766):   Low.