ABSTRACT
Glyptothorax viridis, new species, is described from the Dujang, a hill stream tributary of the Chakpi River, Chindwin drainage in Manipur, India. It is distinguished from its congeners by the following combination of characters: presence of plicae on paired fins; thoracic adhesive apparatus with a deep, cone-shaped median depression opening caudally; a slender pelvic fin reaching the anal fin, and tuberculated skin with three stripes on the body.
Subject(s)
Catfishes , Animals , India , Animal Distribution , RiversABSTRACT
Glyptothorax heokheei, a new species of sisorid catfish is described from the Brahmaputra River drainage in India. It can be distinguished from all congeners, exceptG. dikrongensis,G. indicus,G. rugimentumandG. obliquimaculatus, in having the unculiferous striae of thoracic adhesive apparatus extending anteriorly onto gular region.Glyptothorax heokheeiis distinguished fromG. dikrongensisandG. obliquimaculatusin having a slender body at the anus, more serrations on posterior margin of pectoral-fin spine, greater number of branched anal fin rays, and the extremity of dorsoposterior margin of adipose fin uniformly convex (vs. sharply angular). It differs fromG. rugimentumin having a chevron-shaped (vs. rhomboidal) thoracic adhesive apparatus, more serrations on posterior margin of pectoral-fin spine, and lacking vertical bars on body.Glyptothorax heokheeidiffers fromG. indicusin having a shorter post-adipose distance, smaller interorbital width, more serrations on posterior margin of pectoral-fin spine and nasal barbel not reaching (vs. reaching) anterior margin of eye.Glyptothorax heokheeiis the fifth species ofthe genuspossessing unculiferous ridges of thoracic adhesive apparatus extending anteriorly onto the gular region.
Subject(s)
Catfishes , Animals , Rivers , IndiaABSTRACT
Glyptothorax yuensis, new species, is described from the Yu River, Sagaing division, Myanmar. It is characteristic in having a shallow adipose fin acutely incised at the posterior extremity of its base with an elongated pointed tip, adipose-fin base length 7.610.0 % SL; short nasal barbel, not extending to anterior margin of orbit; thoracic adhesive apparatus present with a conical-shaped median depression opening caudally, its length 11.713.0% SL and width 8.210.1% SL, anteromedial striae present; deep caudal peduncle, its depth 9.411.0 % SL; and two thin yellowish stripes on the body. A key to the species of the genus of Chindwin drainage is provided.
Subject(s)
Catfishes , Animal Distribution , Animals , Myanmar , RiversABSTRACT
A new species of sisorid catfish of the genus Exostoma is described from the Siang River in Arunachal Pradesh, northeastern India. The new species, Exostoma dhritiae, can be distinguished from congeners by the condition of the posterior extremity of the adipose-fin base, the degree of tuberculation on the dorsal surface of the head, and the shape of striae on the anterolateral surface of lips. Further, it is distinguished by the morphometric data for the body depth at the anus, maxillary barbel length, adipose fin base length, caudal peduncle length, caudal peduncle depth and the number of branched pectoral-fin rays. It is the twentieth reported species of Exostoma.
Subject(s)
Catfishes , Animals , Rivers , Animal Distribution , IndiaABSTRACT
Glyptothorax rupiri, a new sisorid catfish, is described from the Brahmaputra River basin in Arunachal Pradesh, northeast India. It differs from its congeners in the Indian subcontinent by the following combination of characters: the presence of plicae on the ventral surface of the pectoral spine and first pelvic-fin ray; a posteriorly serrated dorsal-fin spine, its length 11.312.2% SL; body depth at anus 11.213.4% SL; a thoracic adhesive apparatus longer than broad, with a V-shaped median depression which opens posteriorly; an arrow-shaped anterior nuchal plate element; adipose-fin base length 10.912.6% SL; nasal barbel not reaching anterior orbital margin; 1418 serrae on posterior margin of the pectoral-fin spine; body with two longitudinal pale-cream stripes; densely tuberculated skin; and the presence of numerous tubercles on the dorsal surface of pectoral and pelvic-fin rays.
Subject(s)
Catfishes , Lizards , Animal Distribution , Animals , India , RiversABSTRACT
A new species of the genus Osteobrama is described from the Mahanadi River, Tikarpada, Angul District, Odisha state, India. Osteobrama tikarpadaensis, new species, differs from its congeners in having two pairs of minute barbels; iii-iv unbranched dorsal-fin rays with 25-33 serrae on the last unbranched ray; 15-16 branched pectoral-fin rays, and 25-27 branched anal-fin rays. The status of Osteobrama dayi is discussed and shown to be a valid species. A key to the species of the genus is provided.
Subject(s)
Cyprinidae , Skates, Fish , Animals , India , RiversABSTRACT
A new species of the genus Garra is described from the Ranga River of the Brahmaputra basin, Arunachal Pradesh, northeastern India. Garra magnacavus, new species, differs from its congeners in having an incipient proboscis with a transverse lobe, 15-19 rounded large pits on the snout, weakly developed non-fleshy central callous pad, and an elongate body with 42 lateral-line and 14-16 predorsal scales.
Subject(s)
Cyprinidae , Animals , India , RiversABSTRACT
Garra simbalbaraensis, new species, is described from the Simbalbara River, Himachal Pradesh, India. The new species is distinguished from its congeners in having a combination of following characters: a prominent short, thick, unilobed and rounded proboscis, distinctly projecting downwards above the transverse groove; a black spot at the upper angle of the gill opening, 32-33 lateral line scales and 32 total vertebrae.
Subject(s)
Cyprinidae , Animals , India , RiversABSTRACT
Glyptothorax gopii, a new sisorid catfish, is described from the Kaladan River drainage in Mizoram, northeast India. It is distinguished from its congeners in the Indian subcontinent by the combination of the following characters: an axe-shaped anterior nuchal plate element extensively in contact with the posterior nuchal plate, plicae present on the ventral surfaces of the pectoral-fin spine and outer rays of pelvic-fin rays, an elliptical thoracic adhesive apparatus, the nasal barbel not reaching the anterior margin of the eye, tuberculate skin, and two pale cream longitudinal stripes on the body. Glyptothorax alaknandi is considered a valid species.
Subject(s)
Catfishes , Animal Distribution , Animals , India , RiversABSTRACT
The species diversity of freshwater fishes from the transboundary river, Jaldhaka is still unknown to the scientific communities. We generated 40 DNA barcode sequences of 16 morphologically identified freshwater fishes and compared genetically with the database sequences. Ten species (Acanthocobitis botia, Barilius bendelisis, Crossocheilus latius, Channa punctata, Channa quinquefasciata, Garra gotyla, Garra kempi, Opsarius barna, Psilorhynchus balitora, and Pseudecheneis sulcata) showed unique haplotypes in the studied riverine system. Further, the estimated genetic divergences, BA tree topology, and ABGD species delimitation methods revealed the presence of cryptic diversity in Badis badis, Garra annandalei, G. gotyla, G. kempi, P. balitora, Rasbora daniconius, and Pethia ticto. The study suggested more exhaustive sampling and generation of more molecular data to strengthen the fact. The aimed integrated approach will be helpful to detect the extant species diversity, helps to reevaluate the checklist and promote sustainable conservation management to protect this unparalleled ecosystem.
ABSTRACT
An attempt has been made to evaluate pollution status and aquatic bio-resources of the Moirang river near its mouth in the Loktak Lake. The river water is considered polluted as it has high concentration of free CO2 (14.8 mg/l), nitrite-nitrogen (0.040 mg/l), inorganic phosphorus (0.107 mg/l and faecal coliform bacteria (162/100 ml). Aquatic bio-resources of the river include 24 species of fishes representing 20 genera of 13 families and 16 species of macrophytes representing 14 genera of 9 families. The floral and faunal compositions of the river were mostly widely distributed forms that can survive in polluted environments. Fishery potential and conservation strategies of the river are discussed.
