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

Zootaxa ◽  
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. 

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

Zootaxa ◽  
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. 

A new arc-striped species of Corydoras Lacépède, 1803 (Teleostei: Callichthyidae) from the Peruvian Amazon

Zootaxa ◽  
2021 ◽  
Vol 4948 (2) ◽  
pp. 184-200
Author(s):  
REBECCA FRANCES BENTLEY ◽  
STEVEN GRANT ◽  
LUIZ FERNANDO CASERTA TENCATT
Keyword(s):  
New Species ◽  
Posterior Margin ◽  
Ventral Surface ◽  
River Basins ◽  
Color Pattern ◽  
The Body ◽  
Peruvian Amazon ◽  
Black Stripe ◽  
Dorsal Fin ◽  
Adaptive Value

A new Corydoras is described from the Blanco and Ucayali river basins in Peru. The new species can be distinguished from its congeners by having the following features: (I) posterior margin of dorsal-fin spine with laminar serrations directed towards the origin of the spine; (II) a long, wide, arched, and continuous black stripe, which runs parallel to the dorsal profile of the body, extending at least from the region below anterior origin of dorsal fin to the anterior half of the ventral caudal-fin lobe; (III) a black stripe transversally crossing the eye, forming the typical mask-like blotch; mask clearly not fused to arched stripe in most specimens; some specimens with mask separated from arched stripe by a thin line around the suture between neurocranium (in the region composed by the posteroventral margin of parieto-supraoccipital plus the posterodorsal margin of the compound pterotic) and first dorsolateral body plate; (IV) posterior margin of pectoral-fin spine with laminar serrations directed towards the origin of the spine; (V) pointed snout, presenting a long mesethmoid, with anterior tip larger than 50% of the entire length of the bone; and (V) ventral surface of trunk covered by small, non-coalescent platelets. A discussion on the possible positive adaptive value of the arc-striped color pattern is also provided. 

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

Zootaxa ◽  
2020 ◽  
Vol 4830 (1) ◽  
pp. 141-160
Author(s):  
MIZUKI MATSUNUMA ◽  
FUMIHITO TASHIRO
Keyword(s):  
Lateral Line ◽  
New Caledonia ◽  
Morphological Changes ◽  
Lower Lobe ◽  
Ventral Surface ◽  
Andaman Sea ◽  
Type Specimens ◽  
Caudal Fin ◽  
Lower Jaw ◽  
Northwestern Australia

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. 

A new species of Microschemobrycon (Characiformes: Characidae) from Rio Xingu basin, Brazil

Zootaxa ◽  
2019 ◽  
Vol 4576 (2) ◽  
pp. 326
Author(s):  
WILLIAN M. OHARA ◽  
FERNADO C. JEREP ◽  
MARCEL R. CAVALLARO
Keyword(s):  
New Species ◽  
Lateral Line ◽  
Dark Spot ◽  
Ventral Margin ◽  
Caudal Peduncle ◽  
Dorsal Fin ◽  
Dark Stripe ◽  
Lower Jaw ◽  
Restricted Distribution ◽  
A New Species

A new species of Microschemobrycon with a restricted distribution was recently discovered in the Rio Curuá, Rio Xingu basin, Pará, Brazil. Microschemobrycon cryptogrammus new species can be promptly distinguished from all congeners by the presence of a rounded, dark, conspicuous caudal-peduncle blotch and by a subjacent dark midlateral stripe visible in life. Additionally, the new species can be distinguished from all its congeners, except M. elongatus, by the presence of a longitudinal dark stripe along the lower jaw. The new species can be distinguished from M. elongatus by presenting lateral line with 36–38 pored scales, anterior and posterior nostrils coalescend, dark chromatophores concentrated along the ventral margin of the caudal peduncle and by the presence in life of a dark spot at the base of the dorsal-fin origin. 

Description of a new species of Tilapia Smith, 1840 (Teleostei: Cichlidae) from Ghana

Zootaxa ◽  
2010 ◽  
Vol 2548 (1) ◽  
pp. 1 ◽  
Author(s):  
ANDREAS R. DUNZ ◽  
ULRICH K. SCHLIEWEN
Keyword(s):  
New Species ◽  
Lateral Line ◽  
Lower Lip ◽  
Dorsal Fin ◽  
Lower Jaw ◽  
Pharyngeal Teeth ◽  
Pra River ◽  
Pharyngeal Jaw ◽  
Ventral Area ◽  
A New Species

A new species of the genus Tilapia Smith, 1840 is described from the Pra River drainage in Ghana. Tilapia pra sp. nov. is distinguished from all Tilapia species except T. sparrmanii, T. ruweti, T. guinasana, T. baloni, T. brevimanus, T. mariae, T. cabrae and T. busumana in having bicuspid posterior pharyngeal teeth on the lower pharyngeal jaw. It differs from T. baloni and T. ruweti in having more gill rakers on the first ceratobranchial (lower) gill-arch (10–12 vs. 6–9), from T. guinasana in having a higher number of upper lateral line scales (18–22 vs. 14–17) and from T. sparrmanii in a combination of a higher number of upper lateral line scales (18–22 vs. 14–19), a shorter anal fin base (15.0–18.6% vs. 18.0–23.8% of SL) and a lower number of vertical stripes (6–7 vs. 8–9). It differs from T. mariae, T. cabrae and T. brevimanus in having robust, non-spatulate outer row jaw teeth (vs. gracile spatulate teeth) and from T. busumana in having a longer last dorsal-fin spine (16.2–21.3% vs. 11.6–14.9% of SL), and a smaller lower lip length (8.0–10.7% vs. 9.6–13.9% of SL) and lower jaw length (9.9–13.6% vs. 10.5–15.2% of SL). In addition, T. pra sp. nov. differs from T. busumana in ground coloration. T. pra sp. nov. possesses a light brown to greyish dorsum and a beige to yellow ventral area vs. a bluish-purple to blackish dorsum and darker on underside of head and body of T. busumana.

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

Zootaxa ◽  
2017 ◽  
Vol 4306 (2) ◽  
pp. 291 ◽  
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. 

A new species of Bryconops Kner (Characiformes: Iguanodectidae) from the Rio Maicuru, lower Amazon basin, Brazil

Zootaxa ◽  
2018 ◽  
Vol 4514 (3) ◽  
pp. 372 ◽  
Author(s):  
CÁRLISON SILVA-OLIVEIRA ◽  
FLÁVIO C. T. LIMA ◽  
JUAN D. BOGOTÁ-GREGORY
Keyword(s):  
New Species ◽  
Amazon Basin ◽  
Distal Margin ◽  
Middle Portion ◽  
Black Stripe ◽  
The Third ◽  
Dorsal Fin ◽  
Left Margin ◽  
Dark Patch ◽  
A New Species

A new species of Bryconops is described from the rio Maicuru, a tributary of the left margin of the lower Amazon River, Pará, Brazil. Bryconops chernoffi new species, differs from all its congeners by the presence of an elongated dark patch of pigmentation immediately after the posterodorsal margin of the opercle, running vertically from the supracleithrum to the distal margin of the cleithrum (vs. absence of a similar blotch), and by a dark dorsal fin with a narrow hyaline band at middle portion of dorsal-fin rays (vs. dorsal fin hyaline or with few scattered chromatophores). It differs further from all its congeners, except B. colanegra, by the presence of a blurred black stripe at the anal fin base. It differs from B. colanegra by possessing fewer predorsal scales (8–9 vs. 10–11) and in that the third infraorbital contacts the preopercle ventrally (vs. third infraorbital not contacting preopercle ventrally). The new species is assigned to the subgenus Creatochanes by the number of maxillary teeth, and ossification and denticulation of the gill rakers. 

A review of the deepwater cardinalfish genus Epigonus (Perciformes: Epigonidae) of the Western Indian Ocean, with description of two new species

Zootaxa ◽  
2018 ◽  
Vol 4382 (2) ◽  
pp. 261 ◽  
Author(s):  
MAKOTO OKAMOTO ◽  
OFER GON
Keyword(s):  
New Species ◽  
Indian Ocean ◽  
Western Indian Ocean ◽  
Gulf Of Aden ◽  
Gill Rakers ◽  
Dorsal Fin ◽  
Lower Jaw ◽  
Two New Species ◽  
Opercular Spine ◽  
Abdominal Vertebra

The fishes of the genus Epigonus Rafinesque, 1810 in the Western Indian Ocean (including the Red Sea and the Gulf of Aden) are reviewed. Twelve species of the genus are recognized: Epigonus angustifrons Abramov & Manilo, 1987; E. denticulatus Dieuzeide, 1950; E. elongatus Parin & Abramov, 1986; E. exodon Okamoto & Motomura, 2012; E. lenimen (Whitley, 1935); E. macrops (Brauer, 1906); E. marimonticolus Parin & Abramov, 1986; E. marisrubri Krupp, Zajonz & Khalaf, 2009; E. pectinifer Mayer, 1974; E. robustus (Barnard, 1927); E. telescopus (Risso, 1810); E. waltersensis Parin & Abramov, 1986, and two new species, E. bispinosus n. sp. and E. idai n. sp. Epigonus bispinosus and E. idai belong to the E. constanciae group, defined as having a pungent opercular spine, more than 45 pored lateral-line scales, and lacking an isolated dorsal fin spine between the first- and second dorsal fins. Epigonus bispinosus differs from other members of the group in having two small spines on the symphysis of lower jaw, a pair of ribs on the last abdominal vertebra, 10 + 15 vertebrae, 31–33 gill rakers and lacking a maxillary mustache-like process. Epigonus idai differs from other members of the group in having a pair of ribs on the last abdominal vertebra, 4–5 tiny projections present on symphysis of lower jaw, 10 + 15 vertebrae, strongly ctenoid scales, and 28–29 gill rakers, and in lacking a maxillary mustache-like process. A key to the species, photographs, diagnoses, and distributions in the Western Indian Ocean are given. 

A new species of the greeneye genus Chlorophthalmus (Teleostei: Chlorophthalmidae) from the central North Pacific

Zootaxa ◽  
2019 ◽  
Vol 4555 (3) ◽  
pp. 396
Author(s):  
KYOJI FUJIWARA ◽  
HIDETOSHI WADA ◽  
HIROYUKI MOTOMURA
Keyword(s):  
New Species ◽  
Lateral Line ◽  
North Pacific ◽  
Pectoral Fin ◽  
Dorsal Fin ◽  
Lower Jaw ◽  
Fin Ray ◽  
Seamount Chain ◽  
Fin Length ◽  
Central North Pacific

Chlorophthalmus imperator sp. nov. (Teleostei: Chlorophthalmidae) is described on the basis of nine specimens (98.1–174.8 mm SL) from the Emperor Seamount Chain in the central North Pacific. The new species is characterized by the following combination of characters: 49–51 lateral-line scales; 6 scale rows above lateral line; 3 + 19–22 = 22–25 (modally 22) gill rakers; outermost tooth patches of lower jaw with 6–14 large thorn-shaped teeth, the tips projecting in advance of lower-jaw profile; lower-jaw symphysis with two distinct moderately-sized projections; tongue without teeth; pelvic-fin origin vertically below 4th or 5th (usually 5th) dorsal-fin ray base; head length 26.7–28.9 (mean 27.7) % SL; snout length 6.9–7.7 (7.3) % SL; horizontal orbit diameter 11.9–12.9 (12.3) % SL; upper-jaw length 11.7–13.2 (12.6) % SL; maxillary depth 3.1–3.8 (3.4) % SL; pre-dorsal-fin length 34.2–36.6 (35.3) % SL; pre-pectoral-fin length 27.3–29.8 (27.9) % SL; anus to anal-fin origin length 27.3–29.9 (28.5) % SL; pectoral-fin length 21.0–24.9 (22.7) % SL. 

scholarly journals Description of two new species of sea bass (Teleostei: Latidae: Lates) from Myanmar and Sri Lanka

Zootaxa ◽  
2012 ◽  
Vol 3314 (1) ◽  
pp. 1 ◽  
Author(s):  
ROHAN PETHIYAGODA ◽  
ANTHONY C. GILL
Keyword(s):  
New Species ◽  
Sri Lanka ◽  
Lateral Line ◽  
Valid Species ◽  
Type Specimens ◽  
Body Depth ◽  
Dorsal Fin ◽  
Transverse Line ◽  
Two New Species ◽  
Eye Diameter

Two new species of Lates Cuvier are described. Lates lakdiva, new species, from western Sri Lanka, differs from its Indo-Pacific congeners by its lesser body depth, 26.6‒27.6% SL; 5 rows of scales in transverse line between base of third dorsal-fin spine and lateral line; 31‒34 serrae on the posterior edge of the preoperculum; third anal-fin spine longer than second;47‒52 lateral-line scales on body; and greatest depth of maxilla less than eye diameter. Lates uwisara, new species, fromeastern Myanmar, is distinguished by possessing 7 scales in transverse line between base of third dorsal-fin spine and lat-eral line; eye diameter 4.4‒4.7% SL; body depth 28.4‒34.5% SL; and third anal-fin spine shorter than the second. Despitesubstantial genetic variation, L. calcarifer sensu lato is widely distributed, from tropical Australia through Indonesia, Sin-gapore and Thailand, westwards to at least the west coast of India. Caution is urged in translocating Lates in the Indo-Pacific region as other yet unrecognized species likely exist. The status of the type specimens of L. calcarifer is discussed,and a common lectotype designated for L. heptadactylus and L. nobilis. While Lates vacti (type locality Bengal) may bea valid species, L. cavifrons and L. darwiniensis are considered synonyms of L. calcarifer. Plectopomus Goldfuss and Ptertopomus Goldfuss are shown to be incorrect subsequent spellings of Plectropomus Oken.

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