UCLA XENOGRAMMUS - (HOLLEMAN, 1993)
Picture courtesy of: Alain Daoulas
Largemouth triplefin, Long-jaw threefin, Largemouth threefin, Kasurihebiginpo, カスリヘビギンポ, 沟线突颌三鳍鳚,
Synonyme
Ucla xenogramma (Holleman, 1993)
Synonyme
Ucla xenogramma (Holleman, 1993)
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Description
First dorsal spines (total): 3; Second dorsal spines (total): 12-15 (usually: 13); Dorsal soft rays (total): 11-14 (usually: 12); First dorsal fin half to two-thirds height of second dorsal fin, first two dorsal-fin spines subequal and closely spaced; Anal spines: 1; Anal soft rays: 18-22 (usually: 21); Last dorsal-and anal-fin rays divided to the base; Pectoral fin rays: 15, lower seven thickened and simple, upper three simple, remainder branched once (in small specimens all rays simple). Pelvic fins with one short, hidden spine and two simple rays united by a membrane for the length of the shorter (outer) ray. Caudal fin truncate with 7 dorsal and 6 ventral principal rays, the dorsal and ventralmost two rays simple, the remainder branched once; 10-11 dorsal and 8-9 ventral procurrent rays. Lateral line scales: 4-13 (usually: 12) scales with a short tubule and single pore, followed by 28-34 (usually: 28) scales with a shallow depression or groove. Transverse scales 6/8; Total lateral scales about 40. Precaudal vertebrae: 11-12; Caudal vertebrae: 23-27. Pleural ribs: 10 (on centra 3-12), epipleural ribs: 10 (on centra 1-10). Scalation reduced; Head, nape, belly, pectoral fin bases and base of first two dorsal fins naked. Scales deciduous. Orbital tentacle absent; Anterior nostril tubular with a short, simple tentacle on posterior margin. Teeth acicular, slightly recurved and depressible, in broad band on each jaw, longest teeth on inner margins; Single row of teeth on earner, shortest teeth at centre; Small patch of teeth anteriorly on palatines. First gill slit restricted by membrane between first gill arch and opercle. Cephalic canals with few branches or pores; Mandibular sensory canals open via two pores behind lower jaw symphysis. Max. length: 4.7 cm SL. Depth range: 2 - 41 m, usually: 2 - 32 m.
Description
First dorsal spines (total): 3; Second dorsal spines (total): 12-15 (usually: 13); Dorsal soft rays (total): 11-14 (usually: 12); First dorsal fin half to two-thirds height of second dorsal fin, first two dorsal-fin spines subequal and closely spaced; Anal spines: 1; Anal soft rays: 18-22 (usually: 21); Last dorsal-and anal-fin rays divided to the base; Pectoral fin rays: 15, lower seven thickened and simple, upper three simple, remainder branched once (in small specimens all rays simple). Pelvic fins with one short, hidden spine and two simple rays united by a membrane for the length of the shorter (outer) ray. Caudal fin truncate with 7 dorsal and 6 ventral principal rays, the dorsal and ventralmost two rays simple, the remainder branched once; 10-11 dorsal and 8-9 ventral procurrent rays. Lateral line scales: 4-13 (usually: 12) scales with a short tubule and single pore, followed by 28-34 (usually: 28) scales with a shallow depression or groove. Transverse scales 6/8; Total lateral scales about 40. Precaudal vertebrae: 11-12; Caudal vertebrae: 23-27. Pleural ribs: 10 (on centra 3-12), epipleural ribs: 10 (on centra 1-10). Scalation reduced; Head, nape, belly, pectoral fin bases and base of first two dorsal fins naked. Scales deciduous. Orbital tentacle absent; Anterior nostril tubular with a short, simple tentacle on posterior margin. Teeth acicular, slightly recurved and depressible, in broad band on each jaw, longest teeth on inner margins; Single row of teeth on earner, shortest teeth at centre; Small patch of teeth anteriorly on palatines. First gill slit restricted by membrane between first gill arch and opercle. Cephalic canals with few branches or pores; Mandibular sensory canals open via two pores behind lower jaw symphysis. Max. length: 4.7 cm SL. Depth range: 2 - 41 m, usually: 2 - 32 m.
Color
Body translucent, ventral column sometimes apparent from alternating, long red and short white bands on its dorsal edge; Maroon dots on body forming Y- or H-shaped bars, and single midlateral row of narrow dashes; Single maroon line on snout bifurcating at nostrils.
Body translucent, ventral column sometimes apparent from alternating, long red and short white bands on its dorsal edge; Maroon dots on body forming Y- or H-shaped bars, and single midlateral row of narrow dashes; Single maroon line on snout bifurcating at nostrils.
Etymology
Ucla: acronym for University of California, Los Angeles. In his unpublished doctoral dissertation, Rosenblatt (1959) described Ucla xenogrammus as a new genus and species of tripterygiid fish from eight specimens, one from Palau and seven from Ponape. A formal desciption of the genus and species has never appeared in print. Nevertheless, ichthyologists involved with tropical reel fishes have often collected specimens, sometimes recognising them and labelling them "Ucla" Rosenblatt ms. new sp. As the name has been widely used for so many years and seems to have become accepted, I have decided to retain it. It is also retained in honor of Richard Rosenblatt who first recognised the species as representing an undescribed genus and named it thus. The purpose of this paper is to describe this genus and species and to put an end to more than quarter of a century of nomenclatural limbo.
xenogrammus: from latin prefix, xeno- = having to do with foreigners, relating to strangers or strangeness, from a foreign place + from Greek, gramma = mark.
Original description: Ucla xenogrammus Holleman, 1993 - Type locality: Lizard Island, Great Barrier Reef, Australia, depth 3-15 meters.
Ucla: acronym for University of California, Los Angeles. In his unpublished doctoral dissertation, Rosenblatt (1959) described Ucla xenogrammus as a new genus and species of tripterygiid fish from eight specimens, one from Palau and seven from Ponape. A formal desciption of the genus and species has never appeared in print. Nevertheless, ichthyologists involved with tropical reel fishes have often collected specimens, sometimes recognising them and labelling them "Ucla" Rosenblatt ms. new sp. As the name has been widely used for so many years and seems to have become accepted, I have decided to retain it. It is also retained in honor of Richard Rosenblatt who first recognised the species as representing an undescribed genus and named it thus. The purpose of this paper is to describe this genus and species and to put an end to more than quarter of a century of nomenclatural limbo.
xenogrammus: from latin prefix, xeno- = having to do with foreigners, relating to strangers or strangeness, from a foreign place + from Greek, gramma = mark.
Original description: Ucla xenogrammus Holleman, 1993 - Type locality: Lizard Island, Great Barrier Reef, Australia, depth 3-15 meters.
Distribution
Indo-West Pacific: Cargados Carajos (Saint Brandon's Shoals); Christmas Island and Andaman Sea east to Caroline Islands and Rapa, north to Ryukyu Islands (Japan), south to northern Australia and New Caledonia.
Biology
Adults inhabit lagoons and seaward reefs. They are found in caves, crevices and on flat surfaces of coral, sponges or rubble with algae. Some live on live corals. Eggs are hemispherical and covered with numerous sticky threads that anchor them in the algae on the nesting sites. Larvae are planktonic which occur primarily in shallow, nearshore waters.
Indo-West Pacific: Cargados Carajos (Saint Brandon's Shoals); Christmas Island and Andaman Sea east to Caroline Islands and Rapa, north to Ryukyu Islands (Japan), south to northern Australia and New Caledonia.
Biology
Adults inhabit lagoons and seaward reefs. They are found in caves, crevices and on flat surfaces of coral, sponges or rubble with algae. Some live on live corals. Eggs are hemispherical and covered with numerous sticky threads that anchor them in the algae on the nesting sites. Larvae are planktonic which occur primarily in shallow, nearshore waters.
Last update: 11, June 2022