Abstract
A new species of the genus Badis Hamilton is described from Dibru River, Dibrugarh, Brahmaputra basin in Assam, India. The species has the following combination of characters: a conspicuous black blotch covering the superficial part of the cleithrum above pectoral fin base, a small oval-shaped black blotch on the middle of caudal fin, two predorsal bones, interorbital width 9.9-15.0, upper jaw length 6.1-6.9, lower jaw length 7.1-8.3 and orbital diameter 7.6-9.4 % SL. The species differs from its nearest congeners, B. badis, B. kanabos and B. tuivaiei by the absence of dark black or brown vertical bars on sides. A key to species of Badis of India is provided.
Highlights
Hamilton (1822) described Labrus badis and L. dario from Gangetic provinces. Bleeker (1854) established genus Badis for L. badis under family Nandidae
As per Kullander & Britz (2002) the genus is characterized by a combination of the following features: opercle with a single sharp spine at its posterodorsal corner; spinous and soft dorsal fins contiguous, the base of the soft part longer than that of the spinous part; anal fin with three spines; lateral line pores tubed and interrupted; jaws, vomer and palatines with villiform teeth; scales both ctenoid and cycloid; 2-4 dentary foramina; hypobranchial 3-toothed; males with short pelvic fin, not reaching the first dorsal spine; short dorsal fin lappets; rounded caudal fin
During field surveys in northeast India in 2006 and 2007, specimens of an undescribed Badis were collected from Dibru River, Dibrugarh, Brahmaputra basin, Assam
Summary
Hamilton (1822) described Labrus badis and L. dario from Gangetic provinces. Bleeker (1854) established genus Badis for L. badis under family Nandidae. As per Kullander & Britz (2002) the genus is characterized by a combination of the following features: opercle with a single sharp spine at its posterodorsal corner; spinous and soft dorsal fins contiguous, the base of the soft part longer than that of the spinous part; anal fin with three spines; lateral line pores tubed and interrupted; jaws, vomer and palatines with villiform teeth; scales both ctenoid and cycloid; 2-4 dentary foramina; hypobranchial 3-toothed; males with short pelvic fin, not reaching the first dorsal spine; short dorsal fin lappets; rounded caudal fin. Kullander & Britz (2002) treated B. assamensis as a valid species and designated a neotype. They described B. blosyrus and B. kanabos from Brahmaputra basin, Assam and B. ferrarisi from Myanmar. Six species of Badis are currently recognized from northeast India. During field surveys in northeast India in 2006 and 2007, specimens of an undescribed Badis were collected from Dibru River, Dibrugarh, Brahmaputra basin, Assam. The species is described as Badis dibruensis sp. nov
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
