Redescription of the serranid perchlet Chelidoperca pleurospilus (Günther, 1880)

Chelidoperca pleurospilus (Günther, 1880) (Perciformes: Serranidae) is redescribed on the basis of the lectotype (designated herein) and 69 non-type specimens from the eastern Indian and western Pacific oceans, ranging from the Andaman Sea east to New Caledonia, and northwestern Australia north to Japan. Literature records of the species from the Red Sea and Madagascar are considered applicable to Chelidoperca occipitalis Kotthaus 1973. Chelidoperca pleurospilus is characterized by the following combination of characters: pectoral-fin rays 14–16 (modally 15); pored lateral-line scales 40–43 (43); scale rows in longitudinal series 42–47 (44); scale rows between lateral line and base of 6th dorsal-fin spine 4 (3 full-sized scales plus 1 half-sized); interorbital scales reaching mid-orbit level, not extending beyond anterior margin of orbit; scales on lower jaw ventral surface restricted to angular, not extending anteriorly onto dentary; posterior tip of upper caudal-fin lobe slightly elongate with rounded or pointed contour, that of lower lobe not elongate, with rounded or truncate contour; longitudinal row of ca. 5 dark, laterally elongate blotches (more-or-less continuous in small specimens <60 mm SL) along mid-body from behind head to caudal-fin base. The species is compared with its congeners, and morphological changes with growth in the former discussed in detail.

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Two new species of the genus Chelidoperca (Perciformes: Serranidae) from the Andaman Sea, eastern Indian Ocean

Zootaxa ◽

10.11646/zootaxa.4927.1.5 ◽

2021 ◽

Vol 4927 (1) ◽

pp. 87-103

Author(s):

PETER N. PSOMADAKIS ◽

OFER GON ◽

THAUNG HTUT

Keyword(s):

New Species ◽

Lateral Line ◽

Ventral Surface ◽

Andaman Sea ◽

Distal Margin ◽

Black Stripe ◽

Dorsal Fin ◽

Proximal Half ◽

Lower Jaw ◽

Two New Species

Two new species of the genus Chelidoperca are described from specimens collected in 2015 and 2018 from the Andaman Sea, off the coast of Myanmar during trawl bottom surveys conducted by the R/V Dr. Fridtjof Nansen. Chelidoperca myathantuni sp. nov. is described based on 15 specimens (74.3–129.5 mm SL) from 101–185 m depth, which can be distinguished from all congeners by the following combination of characters: 3 (2 full-sized plus 1 half-sized) scale rows between lateral line and middle of spinous dorsal-fin base; 42–44 (modally 44) pored lateral-line scales; 16 pectoral-fin rays; interorbital scales extending to mid-orbit level; scales on ventral surface of lower jaw restricted to the angular (not extending onto the dentary); enlarged caniniform teeth on the upper jaw; side of body with longitudinal dashed black stripe; dorsal fin pale yellow with reddish pigment mostly restricted at base of spines and rays. Chelidoperca flavimacula sp. nov. is described based on eight specimens (49.7–70.7 mm SL) from 84–131 m depth, which can be distinguished from all congeners by the following combination of characters: 3 (2 full-sized plus 1 half-sized) scale rows between lateral line and middle of spinous dorsal-fin base; 42–45 (modally 42) pored lateral-line scales; 9–10 (modally 10) scale rows below the lateral line; 6 predorsal scales; 16–17 (modally 16) circumpeduncular scales; 5 scales rows on cheek; interorbital scales extending to mid-orbit level; anal fin with yellowish distal margin and three or four rows of bright yellow spots over its proximal half.

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New species of the anthiadin genus Sacura (Perciformes: Serranidae) from the Andaman Sea

Zootaxa ◽

10.11646/zootaxa.4306.2.10 ◽

2017 ◽

Vol 4306 (2) ◽

pp. 291 ◽

Cited By ~ 2

Author(s):

HIROYUKI MOTOMURA ◽

TOMOHIRO YOSHIDA ◽

VEERA VILASRI

Keyword(s):

New Species ◽

Lateral Line ◽

Andaman Sea ◽

Gill Rakers ◽

Yellow Band ◽

Body Depth ◽

Caudal Fin ◽

Dorsal Fin ◽

Fin Rays ◽

Fin Length

Sacura sanguinea n. sp. (Serranidae: Anthiadinae) is described on the basis of two male and one female specimens from the Andaman Sea. The new species is characterized by the following characters: dorsal-fin rays X, 15; pored lateral-line scales 34; gill rakers 8 + 23 = 31; body depth 42.6–44.7% of SL; head length 39.5–41.4% of SL; pectoral-fin length 32.4–33.1% of SL; poorly defined broad yellow band from anterior profile of head to middle of body, the band gradually becoming red around middle of body and ending at caudal-fin base; caudal fin with distinct red spots centrally; and large dark red blotch posteriorly on spinous portion of dorsal fin in females.

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Description of two new species of sandlances, genus Bleekeria (Perciformes, Ammodytidae) from the Andaman Sea (northeastern Indian Ocean)

Zootaxa ◽

10.11646/zootaxa.4903.3.7 ◽

2021 ◽

Vol 4903 (3) ◽

pp. 419-429

Author(s):

PETER N. PSOMADAKIS ◽

TATSUKI YOSHINAGA ◽

ZI ZA WAH ◽

HITOSHI IDA

Keyword(s):

New Species ◽

Lateral Line ◽

Andaman Sea ◽

Coi Gene ◽

Meristic Characters ◽

Caudal Fin ◽

Single Row ◽

Dorsal Fin ◽

Two New Species ◽

Fin Rays

Two new species of Bleekeria Günther, 1862 are described from specimens collected in the Andaman Sea off the coast of Myanmar during bottom surveys conducted by the R/V Dr Fridtjof Nansen in 2015 and 2018. They are distinguished from each other and from congeners by a combination of morphological and meristic characters as well as fin coloration and genetic variance. Bleekeria albicauda sp. nov. has pelvic fins, 40–41 dorsal-fin rays, 54–55 total vertebrae, no teeth in jaws, 4 scale rows between dorsal-fin origin and lateral line, a single row of about 10 scales on mid-upper part of opercle, scales on central part of body clearly shorter than their height, caudal fin with white upper and lower lobes when fresh (unique within the genus). Bleekeria nigrilinea sp. nov. has no pelvic fins, 37–39 dorsal-fin rays, 49–50 total vertebrae, 2½ scale rows between dorsal-fin origin and lateral line (the smallest count within the genus with B. estuaria of Mozambique brackish water), 5–6 scales on mid-upper part of opercle arranged in a single row, scales on central part of body clearly longer than their height, upper and lower margins of caudal fin black when fresh (unique within the genus). The COI gene sequences of the two new species showed clear genetic divergence (pairwise K2P, >10 %) from Bleekeria estuaria Randall & Ida, 2014 and Bleekeria mitsukurii (Jordan & Evermann, 1902). A key to the species of Bleekeria is provided.

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Parapercis randalli, a new sandperch (Pisces: Pinguipedidae) from Southern Taiwan

Zootaxa ◽

10.11646/zootaxa.2690.1.6 ◽

2010 ◽

Vol 2690 (1) ◽

pp. 59 ◽

Cited By ~ 2

Author(s):

HSUAN-CHING HO ◽

KWANG-TSAO SHAO

Keyword(s):

Lateral Line ◽

Dorsal Surface ◽

Morphological Characters ◽

Body Axis ◽

Anterior Portion ◽

Caudal Fin ◽

Lower Jaw ◽

Southern Taiwan ◽

Reddish Orange ◽

Pelvic Fin

Parapercis randalli sp. nov. is described on the basis of four specimens collected in southern Taiwan by angling at a depth of 5–150 m. It differs from its congeners in having five broad reddish brown saddles on the dorsal surface; both jaws and anterior portion of snout reddish orange; a yellow bar with red margin on cheek; a series of 8 red bars below body axis; configuration of spots on head, dorsal and caudal fins; and a combination of morphological characters: three pairs of canine teeth anteriorly in lower jaw; no palatine teeth; vomerine teeth stout, in a single curved row; lateral-line scales 53; margin of preopercle smooth; 4th dorsal spine longest; caudal fin slightly rounded on ventral half, truncate on dorsal half, with a prolonged upper lobe; appressed pelvic fin extends beyond anus. A total of 21 valid pinguipedid species are now recorded from Taiwanese waters.

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Squalius kottelati, a new cyprinid species (Teleostei: Cyprinidae) from Orontes River, Turkey

Zootaxa ◽

10.11646/zootaxa.2270.1.3 ◽

2009 ◽

Vol 2270 (1) ◽

pp. 53-62 ◽

Cited By ~ 5

Author(s):

DAVUT TURAN ◽

B. TOGAY YILMAZ ◽

CÜNEYT KAYA

Keyword(s):

New Species ◽

Lateral Line ◽

Gill Arch ◽

The Other ◽

Gill Rakers ◽

Caudal Peduncle ◽

Caudal Fin ◽

Dark Stripe ◽

Lower Jaw ◽

Fin Length

Squalius kottelati, new species, is described from the Orontes, Ceyhan and Seyhan rivers in Turkey. It belongs to the S. lepidus group, characterized by a projecting lower jaw. It is distinguished from the other species of the genus Squalius in Turkey and adjacent basins by having a conspicuous broad, dark stripe on the upper part of the flank, from the head to the end of the caudal peduncle (vs. absent or very faintly marked, except S. lepidus). It differs from S. lepidus by having a longer head (28.3–30.9, vs. 25.3–27.3 % SL), fewer lateral-line scales (45–47, vs. 48–49) and fewer gill rakers on the first gill arch (9–10, vs. 11–13). It differs from S. anatolicus by having more scales in the lateral line (45–47,mode 46 vs. 43–45, mode 44); a longer caudal fin (length of upper lobe 20.3–22.5, vs. 15.8–19.0 % SL).

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Fishes of the genus Olyra McClelland (Teleostei: Bagridae) from Indo-Bhutan hill streams of Assam, India

Journal of Applied and Natural Science ◽

10.31018/jans.v5i2.360 ◽

2013 ◽

Vol 5 (2) ◽

pp. 503-509

Author(s):

Sewali Pathak ◽

Mrigendra M. Goswami ◽

Nripendra Nath Sharma

Keyword(s):

Lower Lobe ◽

The Other ◽

Type Locality ◽

Head Width ◽

Type Specimens ◽

Lower Range ◽

Caudal Peduncle ◽

Caudal Fin ◽

Peduncle Length ◽

The Himalaya

The type specimens described in this communication are collected from two hill streams, Kanamakra and Langkhar flowing from the Bhutan foothills of the Himalaya through Amguri and Amteka respectively in the Indo- Bhutan border of Chirang district (26015’ 0” - 2700’ 0” N and 90030’ 0” - 90045’ 0” E) of Assam. The occurrence of three catfishes species of the genus Olyra, of which Olyra horae is recorded as a new report from the type locality of Assam. The taxonomic variables of O. horae are compared with other two species namely, O. kempi and O.longicaudata. The O. horae is distinguished from the other two congeners in having the caudal fin forked but not high, upper lobe slightly elongated with 10 rays and lower lobe with 9 rays. It can also be distinguished in having the higher range of the caudal peduncle length (16.9 - 20.0 % SL), pre-anal length (60.1 - 71.4 % SL), head width (81.3 - 81.6 % HL) and the lower range of snout length (21.7 - 24.3 % HL), outer mandibular barbel length (55.7 - 57.3 % HL) in comparison to the other two congeners.

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Redescription of Astyanax goyacensis Eigenmann, 1908 (Ostariophysi: Characiformes: Characidae)

Neotropical Ichthyology ◽

10.1590/s1679-62252009000300003 ◽

2009 ◽

Vol 7 (3) ◽

pp. 371-376 ◽

Cited By ~ 15

Author(s):

Valdener Garutti ◽

Francisco Langeani

Keyword(s):

Lateral Line ◽

Species Complex ◽

Color Pattern ◽

Caudal Peduncle ◽

Caudal Fin ◽

Black Stripe ◽

Conspicuous Feature ◽

Fin Rays ◽

Shape Pattern ◽

Eye Diameter

Astyanax goyacensis Eigenmann, 1908 is redescribed based on the holotype and 25 topotypes. The species belongs to the A. bimaculatus species complex, sharing with those species a black, horizontally ovate, humeral spot (the most conspicuous feature of this complex), two diffuse vertical brown bars in the humeral area (the first through humeral spot and the second 2-3 scales behind), and black medium caudal-fin rays. Furthermore, A. goyacensis possesses a black stripe extending along midlateral body portion, more conspicuous in alcohol preserved specimens. These characteristics allow its inclusion in the putative "black lateral stripe" sub-group of A. bimaculatus species complex. From the species of this complex it differs by the black lateral stripe shape, pattern of chromatophores on the flank, coloration of the caudal fin, scales on the lateral line, branched rays on anal fin, eye diameter, and caudal peduncle depth. Comments about the color pattern in Astyanax bimaculatus species complex are added.

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Resurrection of the genus Homalopteroides (Teleostei: Balitoridae) with a redescription of H. modestus (Vinciguerra 1890)

Zootaxa ◽

10.11646/zootaxa.3586.1.31 ◽

2012 ◽

Vol 3586 (1) ◽

pp. 329 ◽

Cited By ~ 3

Author(s):

ZACHARY S. RANDALL ◽

LAWRENCE M. PAGE

Keyword(s):

Lateral Line ◽

Head Length ◽

Pectoral Fin ◽

Caudal Fin ◽

Dorsal Fin ◽

Interorbital Width ◽

Fin Rays ◽

Orbital Rim ◽

Pectoral Fin Rays ◽

Pelvic Fin

The genus Homalopteroides Fowler 1905 is resurrected and distinguished from the genus Homaloptera van Hasselt 1823based on a combination of characters including a unique mouth morphology, dorsal-fin origin over pelvic fin,≤60 lateral-line scales, and≤30 predorsal scales. Species included in Homalopteroides are H. wassinkii (Bleeker 1853), H. modestus(Vinciguerra 1890), H. rupicola (Prashad & Mukerji 1929), H. smithi (Hora 1932), H. stephensoni (Hora 1932), H. weberi(Hora 1932), H. tweediei (Herre 1940), H. indochinensis (Silas 1953), H. nebulosus (Alfred 1969), H. yuwonoi (Kottelat1998), and possibly H. manipurensis (Arunkumar 1999). Homalopteroides modestus (Vinciguerra 1890) is a poorlyknown species that was originally described from the Meekalan and Meetan rivers of southern Myanmar. It occurs in theSalween, Mae Khlong, and Tenasserim basins, and can be distinguished from all other species of Homalopteroides by thecombination of caudal-fin pattern (black proximal and distal bars, median blotch), 15 pectoral-fin rays, pectoral-fin lengthgreater than head length, 5½–6½ scales above and 5–6 scales below the lateral line (to the pelvic fin), 39–44 total lateral-line pores, no axillary pelvic-fin lobe, pelvic fin not reaching anus, orbital length less than interorbital width in adult, and maxillary barbel reaching to or slightly past the anterior orbital rim.

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Redescription of Ochmacanthus batrachostoma (Miranda-Ribeiro, 1912) (Siluriformes: Trichomycteridae): a possible case of incipient paedomorphism

Neotropical Ichthyology ◽

10.1590/1982-0224-20150030 ◽

2016 ◽

Vol 14 (1) ◽

Cited By ~ 2

Author(s):

Caio S. Neto ◽

Mário de Pinna

Keyword(s):

Body Size ◽

Internal Anatomy ◽

Morphometric Traits ◽

Type Specimens ◽

Caudal Peduncle ◽

Caudal Fin ◽

Maximum Body ◽

Maximum Body Size

ABSTRACT The lepidophagous stegophiline catfish Ochmacanthus batrachostoma (Miranda-Ribeiro, 1912) is endemic to the Paraná-Paraguai basin and is the only member of its genus in that drainage. It remains a poorly-known taxon mainly due to the historical scarcity of study specimens. The species is herein redescribed on the basis of type and non-type specimens from Brazil, Argentina and Paraguay. Ochmacanthus batrachostoma can be distinguished from congeners by the presence of long maxillary and rictal barbels, reduction of the posterior end of the caudal peduncle, a tadpole-like caudal fin and peduncle, among other morphometric traits and features of internal anatomy. Comparisons show that a number of unique traits of adult O. batrachostoma resemble conditions seen in juvenile specimens of other members of Stegophilinae. Such traits are also more pronounced in juveniles of O. batrachostoma itself. The species also has the smallest maximum body size in Ochmacanthus and among the smallest of any stegophiline. In combination, such observations suggest that the species is paedomorphic, although to a degree less extreme than seen in some other trichomycterids. This is the first possible case of paedomorphosis identified for stegophilines.

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Grammatonotus bianchi, a new species of splendid perch (Percoidei: Callanthiidae) from Myanmar, northeastern Indian Ocean

Zootaxa ◽

10.11646/zootaxa.4996.3.5 ◽

2021 ◽

Vol 4996 (3) ◽

pp. 513-524

Author(s):

MARK W. LISHER ◽

HTUN THEIN ◽

PETER N. PSOMADAKIS

Keyword(s):

New Species ◽

Indian Ocean ◽

Andaman Sea ◽

Caudal Fin ◽

Large Head ◽

Caudal Fin Shape ◽

A New Species ◽

Fin Shape

A new splendid perch, Grammatonotus bianchi sp. nov. is described on the basis of two specimens (45.9–68.7 mm SL) collected at 184 m depth in the Andaman Sea off the coast of Myanmar during bottom surveys conducted by the R/V Dr Fridtjof Nansen in 2018. The new species can be distinguished from all congeners by its large head (37.7–38.6% SL), large orbit (14.4–15.3% SL), caudal-fin shape, and fresh coloration. A key to Indian Ocean species of Grammatonotus is provided.

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