Laubuka Bleeker 1859

Key to Laubuka species in South and southeast Asia 1) Pelvic fin elongated, surpassing anal-fin origin............................................................. 2 - Pelvic fin short, not reaching or extending beyond anus....................................................... 4 2) Branched pectoral-fin rays 9, anal-fin rays 14½–15½................................................. L. fasciata - Branched pectoral-fin rays 10–12, anal-fin rays 17½–19½.................................................... 3 3) Branched pelvic-fin rays 6, scales between dorsal-fin origin and lateral line 6½, pelvic-fin length 31.2–35.3% SL.... L. hema - Branched pelvic-fin rays 5, scales between dorsal-fin origin and lateral line 7½, pelvic-fin length 23.2–26.9% SL... L. latens 4) Presence of distinct short vertical bars on the anterior side.................................................... 5 - Absence of short vertical bars on the anterior side........................................................... 8 5) Branched dorsal-fin rays11½–12½........................................................ L. caeruleostigmata - Branched dorsal-fin rays 8½–9 ½......................................................................... 6 6) Presence of dense tubercles on the lower jaw............................................................... 7 - No tuberculation on the lower jaw................................................................ L. varuna 7) Lateral-line scales 29–32, pelvic-fin length 14.9–20.8% SL............................................. L. tenella - Lateral-line scales 34–37, pelvic-fin length 26.0–28.5% SL........................................... L. lankensis 8) Presence of a prominent midlateral line along the side or on the posterior side of body both in preserved and live specimens. ................................................................................................... 9 - Presence of an indistinct midlateral line on posterior side of body, or absence in live specimens...................... 12 9) Predorsal scales 20........................................................................... L. siamensis - Predorsal scales 14–18............................................................................... 10 10) Presence of a caudal-peduncle spot...................................................................... 11 - Absence of a caudal-peduncle spot........................................................... L. parafasciata 11) Body depth 18.8–20.1% SL, caudal-peduncle depth 6.4–7.3% SL, predorsal length 61.6–66.4% SL............. L. trevori - Body depth 29.7–37.7% SL, caudal-peduncle depth 9.0–10.1% SL, predorsal length 74.0–77.0% SL........... L. laubuca 12) Lateral line incomplete, lateral line scales 16–25............................................... L. khujairokensis - Lateral line complete, lateral line scales 28–30............................................................. 13 13) Dorsal-fin-base length less than half of anal-fin-base length, branched pelvic-fin rays 6, branched pectoral-fin rays 9–10............................................................................................ L. myitthaensis - Dorsal-fin-base length more than half of anal-fin-base length, branched pelvic-fin rays 4–5, branched pectoral-fin rays 7–8.......................................................................................... L. indawgyiana