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Ostorhinchus doederleini New Caledonia lagoon fish

OSTORHINCHUS DOEDERLEINI - (JORDAN & SNYDER, 1901)

Actinopterygii (Gigaclass) > Actinopteri (Class) > Teleostei (Subclass) > Kurtiformes (Order) > Apogonidae (Family) > Apogoninae (Subfamily) > Ostorhinchus (Genus)
 
Doederlein's cardinalfish, Fourline cardinalfish, ôsuji-ishimochi,
 
Synonymes
Apogon doderleini (Jordan & Snyder, 1901)
Apogon doederleini (Jordan & Snyder, 1901)
 
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Description
Dorsal spines (total): 8; Dorsal soft rays (total): 9; Anal spines: 2; Anal soft rays: 8; Pectoral fin rays: 15; Pelvic fin rays: I, 5; Pored lateral line scales: 24; Predorsal scales: 3; Circumpeduncular scales: 12; Caudal fin base spot subequal in size to pupil diameter. Max. length: 9.0 cm TL. Depth range: 0 - 30 m.

Color
 Body pinkish brown, with four dark brown stripes on lateral surface of body; Third stripe posteriorly not reaching to a black spot on caudal fin base.

Etymology
Ostorhinchus: from Greek, osteon = bone + from Greek, rhynchos = beak. In reference to the bony jaws, very much advanced and jagged, which take the place of the teeth.
doederleini: in honnor of Ludwig Heinrich Philipp Döderlein (1855–1936) who was a German zoologist. He specialized in echinoderms, particularly sea stars, sea urchins, and crinoids.
Original description: Apogon doederleini Jordan & Snyder, 1901 - Type locality: Nagasaki, Japan.

Distribution
Western Pacific: subtropical, from southern Japan to Taiwan, then from subtropical Australia to New Caledonia and the Kermadec Islands. The species has an antitropical distribution in the west Pacific.

Biology
Commonly occurs in rocky areas near shore and abundant on ledges. Solitary but pair off during breeding. Mouth brooding is done by the male. Nocturnal species.

Similar species
Ostorhinchus limenus (Randall & Hoese, 1988) - Reported from Southwestern Pacific: southern Queensland south to northern New South Wales (Australia). Distinguished from other species by the wide gap between the second and third stripe, the circular dark spot on the caudal peduncle, and the short stripe posterior to the upper portion of the eye. Found in rocky estuaries to offshore reefs, usually in small aggregations. Max length: 14.0 cm TL.
Gerlach et al. 2016 found several genetically distinct but morphologically similar clades of Ostorinchus doederleini on the Great Barrier Reef.