Laubuka parafasciata Lalramliana, Vanlalhlimpuia & Singh, 2017

Laubuka parafasciata Lalramliana, Vanlalhlimpuia & Singh, 2017

Laubuka parafasciata Lalramliana, Vanlalhlimpuia & Singh, 2017 : Zootaxa 4244 (2): 269–276 ( India: Mizoram: Siaha District: Sala River, a tributary of Kaladan River, in the vicinity of Lungpuk); Kullander et al. (2018): 108 ( Myanmar: Kananme Chaung and Chaung Ma Gyi Chaung, Leldee Village; Ann Chaung near Ann Town, Rakhine State).

No specimen examined.

Diagnosis

Laubuka parafasciata can be distinguished by the combination of the following characters: Presence of a broad dark-brown midlateral stripe from posterior rim of orbit to middle of caudal-fin base, body elongate, dorsal profile convex, slightly concave between dorsal-fin origin and caudal-fin origin, mouth oblique, caudal-fin lobes subequal, pectoral-fin long, adpressed fin reaching midway between pelvic-fin origin and anal-fin origin, short pelvic fin, not reaching anal-fin origin, dorsal-fin rays ii, 8½, predorsal scales 16–18, lateral line complete with 28–33 scales, fins hyaline.

Distribution

It was collected in Kananme and Chaung Ma Gyi streams, Leldee Village, and Ann Stream near Ann Township, Rakhine State, Myanmar ( Fig. 2 View FIGURE 2 ).

Comparisons

Laubuka parafasciata is distinguished from Sri Lanka Laubuka species by the presence of a broad dark-brown stripe running along the flank (vs. absence in L. hema , presence of dark brown vertical bars on side of body in L. insularis , L. lankensis , L. ruhuna , and L. varuna ); 28–32+2 lateral-line scales (vs. 34–37+ 1–2 in L. lankensis and L. insularis , 33–35+ 1–2 in L. hema , 31–33+ 1–2 in L. varuna and L. ruhuna ); and 16–18 predorsal scales (vs. 18–21 in L. lankensis , L. insularis , L. ruhuna , and L. hema ). It is distinguished from Indian Laubuka species by having 8½ branched dorsal-fin rays (vs.7½ in L. trevori , L. latens , and L. fasciata ); the presence of a broad dark-brown stripe along the side in alive specimens (vs. two longitudinal stripes, running from behind the opercle to the base of the caudal fin in L. trevori and the absence of any markings on the side of body other than the humeral and caudal-peduncle spots in L. latens ), and minute tubercles scattered on the lower jaw (vs. lack of tubercles on the lower jaw in both species). It is distinguished from L. fasciata in having a short pelvic fin, not reaching the anal-fin origin (vs. elongate, reaching beyond anal-fin origin). It is further distinguished from L. caeruleostigmata and L. siamensis from the Southeast Asia region, in having a broad dark-brown stripe on the body (vs. a series of vertical bars on the anterior half of the body in L. caeruleostigmata and presence of a midlateral stripe apparent on posterior half of body in L. siamensis ).

Remarks

Although we tried to collect Laubuka parafasciata in Rakhine State, no specimens were collected during our fieldwork. The species comparison is conducted using data from Lalramliana et al. (2017). Comprehensive surveys to understand the extent of occurrence, habitat preference, and biology are suggested.