Devario deruptotalea

description

Description. Morphometric data are in Table 1. Body compressed and moderately elongated. Dorsal profile of head straight or slightly convex, that of body smoothly curved, slightly convex from rear of head to origin of dorsal fin, becoming straight and slightly slanted posteriorly from dorsal-fin base to caudal peduncle. Ventral profile of body convex from tip of lower jaw to anal-fin base; straight from posterior end of anal-fin insertion to caudal penduncle. Snout moderately acute in lateral view. Mouth terminal, obliquely directed upward, its articulation with upper jaw reaches slightly above middle of orbit along median axis. Head depth slightly greater than width. Maxilla and premaxillary ascending process extends much beyond horizontal axis through supraorbital margin of orbit. Presence of danionin notch on lower jaw; cleithral spot behind opercle. Infraorbital process present but incipient. Skin grooves on supraorbital shelves present. Two pairs of barbels; rostral barbel shorter than eye diameter, maxillary barbel rudimentary. Lateral line complete with 32 (4), 33 (9) or 34 (1) pored scales. Median predorsal scales 14 (4), 15 (7), 16 (3). Lateral scale rows passing between d

Devario deruptotalea, a new species of cyprinid fish from Manipur, India (Teleostei: Cyprinidae)

diagnosis

Diagnosis. A medium-sized Devario species reaching 63.4 mm SL, distinguished from its congeners in the Chindwin drainage in having the following combination of characters: complete lateral line with 32 – 34 pored scales; unique colour pattern consisting of 4 – 6 dark brown irregularly shaped and arranged bars, each of which is partly confluent with adjacent bar at different levels on anterior one-third of side of body, followed by three distinct dark brown stripes posteriorly; darker P stripe, about twice as broad as other stripes and extending onto median caudal-fin rays; blackish stripe on dorsal fin; series of 3 – 6 yellowish patches formed along path of I- 1 by joining P and P- 1 stripes.

Devario deruptotalea, a new species of cyprinid fish from Manipur, India (Teleostei: Cyprinidae)

distribution

Distribution. Devario deruptotalea is known only from Dutah Stream (Chindwin drainage), a tributary of the Yu River, Manipur, India (Fig. 5). Habitat. The type locality has clear, shallow water measuring about 0.05 m to 1.5 m deep (during the month of March). The water is fast running with the bottom consisting of cobbles, sand and a meagre amount of mud with rich algal growth (Fig. 6). Species collected with D. deruptotalea include: Barilius ngawa, Channa gachua, Garra paralissorhynchus, Garra sp., Glyptothorax ventrolineatus, Mastacembelus armatus, Neolissochilus stracheyi, Poropuntius burtoni and Schistura reticulata.

Devario deruptotalea, a new species of cyprinid fish from Manipur, India (Teleostei: Cyprinidae)

etymology

Etymology. The specific epithet is derived from Latin deruptus, meaning broken and talea, signifying bars, referring to the presence of broken colour bars on the sides of the body. A noun in apposition.

Devario deruptotalea, a new species of cyprinid fish from Manipur, India (Teleostei: Cyprinidae)