Actinopterygii (ray-finned fishes) > Perciformes
(Perch-likes) > Labridae
Etymology: Paracheilinus: Greek, para = the side of + Greek, chaite = hair + Greek, odous = teeth (Ref. 45335); attenuatus: From the Latin attenuatus meaning drawn out or tapering, in reference to the shape of the caudal fin.. More on author: Randall.
Environment: milieu / climate zone / depth range / distribution range
Marine; demersal; depth range 21 - 50 m (Ref. 41634). Tropical
Western Indian Ocean: known only from one atoll of the Amirante Islands in Seychelles and one specimen from the aquarium trade from Kenya.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 5.9 cm SL male/unsexed; (Ref. 41634)
soft rays: 9;
Vertebrae: 25. Median predorsal scales 5; horizontal scale rows on cheek below eye 2; body depth 3.2-3.55 in SL; ; head length 2.9-3.05 in SL; snout length 3.9-4.1 in HL; first dorsal soft ray of adults long and filamentous; caudal fin rounded in young, lanceolate with strongly concave upper and lower posterior margin in adults, the fin length 2.9-3.6 in SL; pelvic fin short, 1.6-1.8 in HL. Adult males in life light orange, shading to yellow ventrally, with four longitudinal lavender bands on body which link to three narrow lavender bands extending posteriorly from eye; dorsal fin yellow with a broad blue-edged red zone posteriorly in fin, the filament red. Small females with the same but narrower stripes, dark-edged blue lines dorsally on head, a large dark brown spot at base of dorsal fin below juncture of spinous and soft portions, and a small dark brown spot dorsoposteriorly on caudal peduncle.
Found over rubble or hard bottom (Ref. 41634). Largest size recorded is 6.58 mm SL from the aquarium trade (Ref. 41634).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Oviparous, distinct pairing during breeding (Ref. 205).
Randall, J.E., 1999. Paracheilinus attenuatus, a new labrid fish from the western Indian Ocean, with a redescription of P. piscilineatus . J. South Asian Nat. Hist. 4(1):29-38. (Ref. 41634)
IUCN Red List Status (Ref. 115185)
CITES (Ref. 115941)
Threat to humans
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingMass conversion
Estimates of some properties based on models
Preferred temperature (Ref. 115969
): 26 - 27, mean 26.7 (based on 6 cells).
Phylogenetic diversity index (Ref. 82805
= 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00977 (0.00458 - 0.02086), b=3.05 (2.87 - 3.23), in cm Total Length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245
Trophic Level (Ref. 69278
): 3.4 ±0.4 se; Based on size and trophs of closest relatives
Resilience (Ref. 69278
): High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.).
Vulnerability (Ref. 59153
): Low vulnerability (13 of 100) .