Point Quobba (24º29´S) to Scott Reef (14º04´S) and Ashmore Reef, WA and from Murray Island, QLD (9º56´S) to Cook Island, NSW; tropical, west-central Pacific.
Timor Province (2), Cape Province (20), Northwest Shelf Province (27), Central Western Shelf Transition (28), Central Western Shelf Province (29), Northwest Transition (3), Central Eastern Shelf Province (38), Central Eastern Shelf Transition (39), Northeast Shelf Province (40), Northeast Shelf Transition (41)
The Live Marine Resources of the Western Central Pacific, Vol.4(FAO,1999)
Body relatively slender; distance from dorsal-fin origin to pelvic-fin origin 25 to 28% standard length. Vomerine teeth relatively large, arranged in a chevron. Dorsal fin with III slender spines and 22 rays; anal fin with III slender spines and 13 or 14 rays; caudal fin rounded. Lateral line disjunct, consisting of an anterodorsal series of 26 to 32, and a peduncular series of 8 to 13 tubed scales. Colour in females and juveniles with head and body brownish to greyish brown, paler ventrally on head and breast, sometimes becoming reddish on caudal peduncle; dorsal and anal fins greyish basally and clear on outer parts; caudal fin yellowish grey to bright orange-red basally, becoming bright yellow to clear posteriorly; males with lower part of head and lower part of body anterior to aboutmiddle of pectoral fins yellowish grey to bright yellow; scales of ascending portion of anterior lateral line and of scale row beneath horizontal portion of anterior lateral line yellowish grey to bright yellow; remainder of head and body dark grey to black, often with bluish or greenish sheen, and sometimes with several short, bluish grey to bright blue bars above anal fin and on caudal peduncle; dorsal, anal, and caudal fins dark grey to black basally, with remainder of fin pale blue to clear.
A common but secretive species found in holes and crevices of exposed outer reef flats and reef margins. Occurs in pairs and feeds on small crabs, isopods, and copepods. Usually most abundant in high current or surge areas.
Distributed in the Indo-Pacific from Maldives and Laccadives to Fiji; north to Ryukyu Islands, south to the Great Barrier Reef. Throughout Micronesia. It is found in southern Taiwanese waters; Lyudao and Lanyu, southeastern Taiwan.
Frequently enters the aquarium fish trade and has been bred in captivity.
Western Pacific: Peninsular Malaysia to Hong Kong and the Ryukyu Islands, south to Western Australia, and east to Vanuatu and the Gilbert Islands. Replaced by an undescribed species at Fiji and Tonga and
in the Indian Ocean (Ref.
Size / Weight / Age
range ? - ? cm
Max length : 6.2 cm TL male/unsexed; (Ref.
A common but secretive species (Ref.
) found in holes and crevices of exposed outer reef flats and reef margins. Occurs in pairs and feeds on small crabs, isopods, and copepods (Ref.
). Usually most abundant in high current or surge areas. Frequently enters the aquarium fish trade and has been bred in captivity (Ref.
). Sometimes solitary (Ref 90102).
Life cycle and mating behavior
Bi-directional sex change has been confirmed for this species (Ref.
Preferred temperature (Ref.
): 25.1 - 29, mean 27.9 (based on 648 cells).
Phylogenetic diversity index (Ref.
= 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00490 (0.00190 - 0.01264), b=3.10 (2.88 - 3.32), in cm Total Length, based on LWR estimates for this (Sub)family-body shape (Ref.
Trophic Level (Ref.
): 3.3 ±0.44 se; Based on food items.
): High, minimum population doubling time less than 15 months ().
): Low vulnerability (12 of 100) .
Capuli, Estelita Emily
Valdestamon, Roxanne Rei
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