Found in aggregations over hard, algal coated bottoms of exposed, surf-swept outer reef flats, lagoon and seaward reefs, to a depth of at least 24 m (Ref. 30573). Benthopelagic (Ref. 58302). Juveniles associated with floating material (Ref. 58302). Mainly herbivorous, feeding on seaweed and associated invertebrates (Ref. 30573). Appear to be more commonly involved in hallucinogenic fish poisoning than most other related species (Ref. 4690). Caught with other types of artisanal gear. Minimum depth reported taken from Ref. 30874.

Chagos, Kenya, Mozambique, Red Sea, Seychelles, Somalia, South Africa (country), Tanzania

Indo-Pacific: Red Sea and East Africa to the Hawaiian, Line and Tuamoto islands, north to southern Japan, south to Australia.

Dorsal spines (total): 11; Dorsal soft rays (total): 11 - 12; Analspines: 3; Analsoft rays: 11 - 12

Maximum size: 500 mm TL

50.0 cm TL (male/unsexed; (Ref. 6642))

Found in aggregations over hard, algal coated bottoms of exposed, surf-swept outer reef flats, lagoon and seaward reefs, to a depth of at least 24 m. Appears to be more commonly involved in hallucinogenic fish poisoning than most other related species (Ref. 4690). Rare in Hawaii. Feeds on algae and invertebrates (Ref. 5213). Caught with other types of artisanal gear.

Grey with dusky fins. When small or sub-adult with pale scale centers forming horizontal lines along scale rows. Soft parts of dorsal and anal fins elongated anteriorly, resulting in near vertical rear margins. Snout more angled down compared to other species (Ref. 48636).

Depth range based on 12 specimens in 1 taxon.
Water temperature and chemistry ranges based on 10 samples.

Environmental ranges
  Depth range (m): 0.61 - 12
  Temperature range (°C): 25.819 - 29.047
  Nitrate (umol/L): 0.046 - 0.555
  Salinity (PPS): 34.134 - 35.347
  Oxygen (ml/l): 4.515 - 4.700
  Phosphate (umol/l): 0.092 - 0.207
  Silicate (umol/l): 1.097 - 6.035

Graphical representation

Depth range (m): 0.61 - 12

Temperature range (°C): 25.819 - 29.047

Nitrate (umol/L): 0.046 - 0.555

Salinity (PPS): 34.134 - 35.347

Oxygen (ml/l): 4.515 - 4.700

Phosphate (umol/l): 0.092 - 0.207

Silicate (umol/l): 1.097 - 6.035
 
Note: this information has not been validated. Check this *note*. Your feedback is most welcome.

Depth: 1 - 24m.
From 1 to 24 meters.

Habitat: reef-associated. Blue chubb.  (Forsskal, 1775) Attains 70 cm. Chubbs are plump fish with noticeably small heads. Silvery-blue, darker above; silver band below the eye and yellow lines along body scale rows; fins dark. They inhabit shallow turbulent waters and feed exclusively on seaweed and redbait. At times they congregate in large numbers to graze on seaweed covered reefs. They can suddenly develop a white-spotted pattern on the body depending on their mood. Red Sea, Indo-West Pacific south to East London.

reef-associated; marine; depth range 1 - 45 m (Ref. 58652)

Found in aggregations over hard, algal coated bottoms of exposed, surf-swept outer reef flats, lagoon and seaward reefs, to a depth of at least 24 m. Mainly herbivorous, feeding on seaweeds and associated invertebrates (Ref. 30573). Appears to be more commonly involved in hallucinogenic fish poisoning than most other related species (Ref. 4690). Caught with other types of artisanal gear. Minimum depth reported taken from Ref. 30874.

Barcode of Life Data Systems (BOLDS) Stats
Public Records: 1
Species: 8
Species With Barcodes: 1

Not Evaluated

fisheries: minor commercial