Rusty jobfishARQ

 
Aphareus rutilans
43.2 cm TL

Characteristic features:

  • Dorsal fin continuous
  • Membranes of dorsal and anal fins without scales
  • Maxilla without scales
  • 69–75 lateral-line scales
  • First gill arch with 49–52 gill rakers

Colour:

Variable blueish grey or mauve to reddish.

Size:

Up to 110 cm TL.

Distribution:

Indo-West and Central Pacific in tropical waters.

Habitat:

Coral and rocky reefs, from the surface to at least 250 m depth.

Biology:

Feeds on fishes, squids and crustaceans. Solitary or occuring in small schools. In Vanuatu, spawning occurs through spring and summer, with peak activity in November and December.1 Age and length at which 50% of Rusty jobfish reach maturity is estimated at 3.8 years, and 65.5 cm FL, respectively. Estimated maximum age is 18 years.2

Fisheries:

Caught with handlines and bottom longlines.

Similar species:

 
Aphareus furca
Small-toothed jobfish
Image: Jack Randall (CC BY-NC 3.0)
Aphareus furca differs in having a first gill arch with 22–28 gill rakers (vs. 49–52) and a body colour varying from silvery purple brown on back, silvery blue below (vs. blueish grey or mauve to reddish).
 
Pristipomoides spp.
Pristipomoides typus
Pristipomoides typus
Pristipomoides species differ in having a premaxilla not protrusible, attached to snout at symphysis by a frenum (vs. premaxilla protrusible, not attached to snout by frenum).

External links:

FishBase
The IUCN Red List of Threatened SpeciesTM

References:

  1. 1.
    Anderson WD, Allen GR. Lutjanidae. Jobfishes. Food and Agricultural Organization, Rome.; 2001.
  2. 2.
    Martinez-Andrade F. A comparison of life histories and ecological aspects among snappers (Pisces: Lutjanidae) [Internet]. 2003. Available from: https://digitalcommons.lsu.edu/cgi/viewcontent.cgi?article=3270&context=gradschool_dissertations