Pseudolaguvia moinensis, a new benthic miniature Asian catfish (Teleostei: Sisoridae) from Arunachal Pradesh, north-eastern India

A new species of miniature sisorid catfish is described, from the upper Brahmaputra river drainage in northeastern India. The new species is distinguished from all its congeners except P. ferruginea and P. focusa by having an elongate light brown to cream marks either side on ventro-lateral margin just above anus. Further, distinguished from its congeners by the following combination of characters: presence of a W-shaped dark brown band on caudal fin, thoracic adhesive apparatus extending closer to pelvic-fin base, smooth anterior margin of dorsal spine, a narrow V-shaped light brown to cream bands on side of the body, dorsal-spine length (10.7-14.7% SL), dorsal-fin base length (10.7-14.2% SL), pectoral-fin spine length (14.0-21.1% SL), pelvic-fin length (13.5-16.6% SL), caudal peduncle length (14.4-18.2% SL) and depth (7.8-9.9% SL), total vertebrae (30-31), caudal fin with a complete medial hyaline bands towards its anterior end, reaching outer margin of each lobe. Other combination of characters differentiating the new species from its congeners are provided in the respective diagnoses.

Glyptothorax maceriatus, a new species of sisorid catfish (Actinopterygii: Siluriformes) from north-eastern India

Zootaxa ◽

10.11646/zootaxa.3416.1.4 ◽

2012 ◽

Vol 3416 (1) ◽

pp. 44 ◽

Author(s):

HEOK HEE NG ◽

LALRAMLIANA _

Keyword(s):

New Species ◽

Indian Subcontinent ◽

River System ◽

Dorsal Spine ◽

Caudal Peduncle ◽

Body Depth ◽

Spine Length ◽

North Eastern ◽

Peduncle Length ◽

Glyptothorax maceriatus, new species, is described from the Meghna-Surma River system in Mizoram, northeast India.It differs from most congeners in the Indian subcontinent in having thoracic adhesive apparatus with a narrow elliptic cen-tral depression that is almost enclosed posteriorly by skin ridges. The following combination of characters serve to distin-guish it from congeners in the Indian subcontinent: nasal barbel not reaching anterior orbital margin; interorbital distance27.0–31.4% HL; head length 23.7–25.3% SL; head depth 12.5–14.2 % SL; thoracic adhesive apparatus with narrow el-liptic central depression that is almost enclosed posteriorly by skin ridges (striae) and with single, non-diverging series ofstriae running along its edges; width of adhesive apparatus 55.8–72.1% its length; unculiferous ridges of adhesive appa-ratus not extending anteriorly onto gular region; absence of striae on first pectoraland pelvic-fin elements; pectoral-finlength 20.7–24.9% SL; dorsal-spine length 13.0–17.1% SL; smooth posterior edge of dorsal spine; dorsal-to-adipose dis-tance 17.8–23.6% SL; body depth at anus 11.3–13.8% SL; pelvic-fin length 15.9–19.1 % SL; length of anal-fin base13.9–16.2% SL; caudal peduncle length 21.4–23.9% SL; and caudal peduncle depth 6.4–7.6% SL (3.1–3.4 times in its length).

Speolabeo hokhanhi, a new cavefish from Central Vietnam (Teleostei: Cyprinidae)

Zootaxa ◽

10.11646/zootaxa.4476.1.10 ◽

2018 ◽

Vol 4476 (1) ◽

pp. 109 ◽

Author(s):

NGUYEN DINH TAO ◽

LIANG CAO ◽

SHUQING DENG ◽

E ZHANG

Keyword(s):

New Species ◽

River Basin ◽

National Park ◽

Caudal Peduncle ◽

Caudal Fin ◽

Lower Lip ◽

Central Vietnam ◽

Peduncle Length ◽

Speolabeo hokhanhi, new species, is here described from Hang Va Cave in Phong Nha-Ke Bang National Park (Son River basin) in Central Vietnam. It can be distinguished from S. musaei by having no papillae on the lower lip, no hump immediately behind the head, a duckbilled snout, a shorter caudal peduncle (length 16.8–18.6% SL), and the pelvic fin inserted closer to the snout tip than to the caudal-fin base.

Pseudolaguvia viriosa, a new catfish (Teleostei: Sisoridae) from north-eastern India

Zootaxa ◽

10.11646/zootaxa.3522.1.6 ◽

2012 ◽

Vol 3522 (1) ◽

pp. 81 ◽

Cited By ~ 3

Author(s):

HEOK HEE NG ◽

LAKPA TAMANG

Keyword(s):

Dorsal Spine ◽

Head Width ◽

Caudal Peduncle ◽

Body Depth ◽

Spine Length ◽

North Eastern ◽

Pectoral Spine ◽

Eye Diameter ◽

Adipose Fin ◽

Peduncle Length

This study describes Pseudolaguvia viriosa, a new miniature sisorid catfish from the Brahmaputra River drainage in Ar-unachal Pradesh, northeastern India. Pseudolaguvia viriosa can be distinguished from congeners in having a combinationof: eye diameter 10–15% HL, interorbital distance 35–38% HL, head width 21.5–23.5% SL, thoracic adhesive apparatusreaching beyond base of last pectoral-fin ray, pectoral spine length 26.9–32.9% SL, dorsal spine length 23.4–29.0% SL,dorsal spine with anterior edge smooth or with rugose surface only on distal third of spine, body depth at anus 16.9–19.0%SL, length of adipose-fin base 12.5–15.4% SL, caudal peduncle length 14.8–17.7% SL, caudal peduncle depth 7.4–9.8% SL, caudal-fin length 26.5–32.4% SL, 28–29 vertebrae, and one or more distinct pale bands encircling body.

The genus Peckoltia with the description of two new species and a reanalysis of the phylogeny of the genera of the Hypostominae (Siluriformes: Loricariidae)

Zootaxa ◽

10.11646/zootaxa.1822.1.1 ◽

2008 ◽

Vol 1822 (1) ◽

pp. 1 ◽

Cited By ~ 42

Author(s):

JONATHAN W. ARMBRUSTER

Keyword(s):

New Species ◽

Amazon Basin ◽

Original Description ◽

Color Pattern ◽

The Body ◽

The Other ◽

Caudal Fin ◽

Two New Species ◽

Fin Spines ◽

Peckoltia contains 12 described species, eight of which are considered valid. Peckoltia arenaria, P. filicaudata, and P. ucayalensis are recognized as synonyms of P. bachi and P. kuhlmanni is recognized as a synonym of P. vittata. In addition, two new species are described. The type species of Peckoltichthys and Sophiancistrus are synonyms of P. bachi and both genera are recognized as junior synonyms of Peckoltia. The species of Peckoltia range throughout much of the Amazon basin, the upper Orinoco, the upper Essequibo, and perhaps the Maroni, and can be identified from most other ancistrins by having dentaries that form angle of 90° or less and from others with angled dentaries by lacking the synapomorphies of those genera. The species of Peckoltia vary from one another mostly in coloration. Peckoltia braueri, P. caenosa n. sp., P. cavatica and P. vittata lack spots on the head while the other species have them. Peckoltia braueri and P. cavatica have orange bands in the dorsal and caudal fins and have the bones and plates of the head and nape outlined in black (vs. no orange bands and head plates and bones not outlined in black in P. caenosa and P. vittata). Peckoltia caenosa has a color pattern consisting of dark vermiculations on the head and abdomen (vs. saddles or blotches on the head and faint dark spots on the abdomen in P. vittata). Among the species with spots on the head, P. lineola n. sp. and P. vermiculata have some of the spots combining to form vermiculations (vs. spots free in P. bachi, P. brevis, P. furcata, and P.oligospila) with the vermiculations larger than the pupil in P. lineola and narrower in P. vermiculata and the vermiculations radiating from a central point in P. vermiculata vs. no such pattern in P. lineola. Peckoltia bachi can be identified from the other species by having widened pelvic-fin spines that can be pulled ventrally such that they are completely ventral and parallel to the body (vs. pelvic-fin spines narrow and cannot be adducted ventral to body) and by having the eye low on the head (vs. high). Peckoltia brevis can be identified from P. furcata and P. oligospila by having well-developed dorsal saddles (vs. saddles faint), no spots on the body behind the nape (vs. spots generally present behind the nape); from P. oligospila by having bands in the caudal fin (vs. spots); and from P. furcata by having the lower caudal-fin spine longer than the upper (vs. upper spine longer). Peckoltia furcata can be identified from P. oligospila by having the upper caudal-fin spine longer than the lower (vs. lower spine longer) and by having bands in the caudal fin (vs. spots). Ancistrus yaravi had been recognized as a species of Peckoltia. The type of A. yaravi is lost, but the original description suggests that the species is the senior synonym of Neblinichthys roraima. A revised morphological phylogeny demonstrates the lack of support for Peckoltia and Hemiancistrus as monophyletic, and phenetic definitions are provided for the two genera. The phylogeny also demonstrates a lack of support of the genus Watawata.

Schistura madhavai, a new species of hill-stream loach from Sri Lanka, with redescription of S. notostigma (Teleostei: Nemacheilidae)

Zootaxa ◽

10.11646/zootaxa.4311.1.6 ◽

2017 ◽

Vol 4311 (1) ◽

pp. 96 ◽

Author(s):

HIRANYA SUDASINGHE

Keyword(s):

New Species ◽

Sri Lanka ◽

Lateral Line ◽

The Body ◽

Pairwise Distance ◽

Caudal Fin ◽

Dorsal Fin ◽

Fin Ray ◽

Line Ending ◽

Schistura madhavai, new species, is described from Suriyakanda, Sri Lanka. It is distinguished from all other species of Schistura in the peninsula of India and Sri Lanka by the combination of the following characters: 8–9 wide, brown postdorsal bars separated by narrow, white interspaces; width of interspaces ¼–⅓ times width of bars; black bar at caudal-fin base wider than interspaces on the body; incomplete lateral line, ending beneath dorsal-fin base; absence of an axillary pelvic lobe; adpressed pelvic fin just reaching anus; origin of the pelvic fin on a vertical through the last unbranched dorsal-fin ray. Schistura notostigma, the only other Sri Lankan species of Schistura, is redescribed. It can be distinguished from all other species of Schistura in the peninsula of India and Sri Lanka by the combination of the following characters: 6–7 wide, brown postdorsal bars; width of interspaces ½–1 times width of bars; complete, black bar at caudal-fin base narrower than width of interspaces between bars on body; emarginate caudal fin; incomplete lateral line ending beneath dorsal-fin base; adpressed pelvic fin surpassing anus; and origin of pelvic fin beneath first branched dorsal-fin ray. Schistura madhavai is separated from S. notostigma by an uncorrected pairwise distance of 3.0–3.8% for the 16S rRNA gene fragment.

A new Schistura from an upper Mekong affluent in Yunnan (Teleostei: Nemacheilidae)

Zootaxa ◽

10.11646/zootaxa.4341.4.11 ◽

2017 ◽

Vol 4341 (4) ◽

pp. 585

Author(s):

MARCO ENDRUWEIT

Keyword(s):

New Species ◽

Yunnan Province ◽

Anterior Part ◽

The Body ◽

Caudal Fin ◽

Deep Body ◽

Schistura stala, new species, is described from the Mekong drainage in Dali, Yunnan Province, China. The new species is readily distinguished from congeners in the upper Mekong and adjacent drainages by having the caudal-fin bar reduced, stretching over the median ⅓ of the fin base. The species can be further diagnosed by a deep body; a short caudal fin, head and pelvic fin; 38 vertebrae modally; 9–12 faint irregular flank bars, that are often anastomotic or dissolved; and few scales scattered on the anterior part of the body.

Three new species of Hyphessobrycon (Characiformes: Characidae) from the upper rio Araguaia basin in Brazil

Neotropical Ichthyology ◽

10.1590/s1679-62252003000100003 ◽

2003 ◽

Vol 1 (1) ◽

pp. 21-33 ◽

Cited By ~ 17

Author(s):

Flávio C. T. Lima ◽

Cristiano R. Moreira

Keyword(s):

New Species ◽

Lateral Surface ◽

Color Pattern ◽

The Body ◽

Ventral Region ◽

Caudal Peduncle ◽

Caudal Fin ◽

Dark Color ◽

Three New Species ◽

Three new species of Hyphessobrycon (Characiformes: Characidae) are described from the upper rio Araguaia basin. Hyphessobrycon langeanii n. sp. is distinguished from all congeners by the presence of a well-defined, round humeral spot, a reticulate color pattern, a broad, horizontally-elongate caudal-peduncle blotch, and a relatively wide, faint midlateral dark stripe. Hyphessobrycon eilyos n. sp. is distinguished from all congeners by the absence of humeral and caudal spots; by the presence of numerous dark chromatophores on the lateral surface of the body, intensely concentrated on the ventral region from the pelvic-fin origin to the end of the caudal-fin base, dorsal, adipose, and caudal fins with carmine red pigmentation in life; and the presence of 7-11 maxillary teeth. Hyphessobrycon weitzmanorum n. sp. is distinguished from all congeners by the combination of the possession of two humeral spots and a general dark color pattern. These three new species, along with Creagrutus molinus (Characidae), Apareiodon tigrinus (Parodontidae), Aspidoras velites (Callichthyidae), an undescribed member of the Hypoptopomatinae (Loricariidae), Cnesterodon septentrionalis (Poeciliidae), and Simpsonichthys cholopteryx (Rivulidae), all of which are apparently endemic of the upper rio Araguaia, indicate that this area is a previously unrecognized area of endemism.

A new species of Pimelodus La Cépède, 1803 (Siluriformes: Pimelodidae) from rio Ribeira de Iguape basin, Brazil

Neotropical Ichthyology ◽

10.1590/s1679-62252011000100011 ◽

2011 ◽

Vol 9 (1) ◽

pp. 127-134 ◽

Author(s):

Frank Raynner V Ribeiro ◽

Carlos Alberto S. de Lucena ◽

Osvaldo T Oyakawa

Keyword(s):

New Species ◽

Dorsal Surface ◽

Branchial Arch ◽

The Other ◽

Gill Rakers ◽

Caudal Fin ◽

Fin Rays ◽

A New Species ◽

Pimelodus multicratifer, a new species, is described from the rio Ribeira de Iguape basin. The new species differs from the other Pimelodus species by the following features: 26 to 30 gill rakers on the first branchial arch; a combination of three to six rows of dark spots regularly or irregularly scattered on the flanks and several small dark spots irregularly scattered on the dorsal surface of head, supraoccipital process, and sometimes on the dorsal and caudal fins; striated lips; maxillary barbels reaching between posterior tip of the pelvic-fin rays and posterior tip of the middle caudal-fin rays.

Hemiodus jatuarana, a new species of Hemiodontidae from the rio Trombetas, Amazon Basin, Brazil (Teleostei, Characiformes)

Zootaxa ◽

10.11646/zootaxa.546.1.1 ◽

2004 ◽

Vol 546 (1) ◽

pp. 1 ◽

Cited By ~ 4

Author(s):

FRANCISCO LANGEANI

Keyword(s):

New Species ◽

Amazon Basin ◽

Branchial Arch ◽

The Body ◽

Dark Spot ◽

Gill Rakers ◽

Caudal Peduncle ◽

Caudal Fin ◽

Dark Pigmentation ◽

A New Species

Hemiodus jatuarana, a new species of the Hemiodontidae from Oriximin , rio Trombetas, Amazon Basin, Brazil, is described. The new species can be readily distinguished from its congeners by the presence of a horizontally elongated dark spot on the caudal peduncle, and by the absence of any other dark pigmentation pattern on the body. Hemiodus jatuarana is readily separated from H. immaculatus, another species without dark pigmentation on the body, by having 25 27 epibranchial and 36 37 ceratobranchial gill rakers on the first branchial arch, and caudal-fin lobes without longitudinal stripes, vs. 14 16 and 21 25 gill rakers, and a conspicuous longitudinal stripe on each caudal-fin lobe in H. immaculatus. The new species is only known from its type-locality, where it cooccurs with H. immaculatus.

New species of bumblebee catfish of the genus Batrochoglanis Gill, 1858 (Siluriformes: Pseudopimelodidae) from the Aripuanã River basin, Mato Grosso, Brazil

Zootaxa ◽

10.11646/zootaxa.4674.2.6 ◽

2019 ◽

Vol 4674 (2) ◽

pp. 243-263

Author(s):

OSCAR A. SHIBATTA

Keyword(s):

New Species ◽

River Basin ◽

Amazon Basin ◽

The Body ◽

Caudal Fin ◽

Mato Grosso ◽

Brown Stripe ◽

Mouth Width ◽

Eye Diameter ◽

Adipose Fin

A new species, Batrochoglanis castaneus, is described from the Aripuanã River basin, Brazil. It differs from congeners, except B. raninus and B. transmontanus, by the dark brown color of the body and a dark brown stripe on the caudal fin. The new species differs from B. raninus by the longer maxillary barbel, longer prepelvic length, greater prepectoral length, smaller anal-fin base length, and smaller head depth. The new species differs from B. transmontanus by the longer caudal-fin dorsal lobe, presence of a hyaline spot or stripe on pelvic, dorsal, and anal fins, longer maxillary barbel, longer pectoral-fin, and dorsal-fin spines, greater eye diameter, smaller head depth, and larger mouth width. A metapterygoid anteriorly bifurcated and the lateral line reaching the adipose fin present in the new species are interpreted as synapomorphies of Batrochoglanis. On the other hand, the distribution of pore and neuromasts of the laterosensory system of the head seems to be very conservative in the family. The new species is known only from the Aripuanã River basin, reinforcing its characteristics as an area of endemism for fishes in the Amazon basin.