Taxonomy & naming
Schistura indawgyiana was formally described by the Swiss ichthyologist Maurice Kottelat in 2017, in Ichthyological Exploration of Freshwaters (volume 28, issue 1, pages 1–8), from material collected in a tributary stream of the Lake Indawgyi basin in Kachin State, northern Myanmar. It belongs to Schistura, by far the largest genus in the stone-loach family Nemacheilidae, itself the largest family in the loach superfamily Cobitoidea — a genus that has absorbed many species once placed in the older, broader Nemacheilus and Noemacheilus.
The species epithet marks it plainly as a fish of place: indawgyiana, for Lake Indawgyi. As a 2017 description it postdates most standard references — it has no FishBase entry as of this writing, and the Catalog of Fishes remains the authority for its valid combination. It has not been placed in synonymy with any other name, and no distinct subspecies or geographic variants are documented; the description rests on the population from its single known tributary.
Morphology
Schistura indawgyiana is a small, elongate stone loach in the classic Nemacheilidae mould: a slender, near-cylindrical body, a flattened ventral profile suited to holding position on stream substrate, and the family's characteristic near-scaleless or very finely scaled skin. As in other Schistura, an erectile spine sits in a groove below the eye — a defensive feature shared across the loach superfamily, though smaller and less conspicuous than in the heavier-bodied botiids.
Detailed morphometrics and colour pattern for this species have not been captured in the cached sources, and no maximum length figure specific to S. indawgyiana is available. Typical Schistura stone loaches run roughly 2–6 in in standard length, and it is reasonable to expect this species falls within that range, but until a size is directly documented for it, that should be read as a genus-level guide rather than a confirmed figure for this fish.
Habitat
The species is known only from a single tributary stream feeding Lake Indawgyi, Kachin State, in far northern Myanmar. Lake Indawgyi itself is Myanmar's largest freshwater lake and hosts a notably rich native fish fauna — around 93 recorded species, including at least two lake endemics and several species new to science from recent surveys, a richness that helped place the lake on UNESCO's tentative World Heritage list. S. indawgyiana is one of at least six endemic loach and fish species known from the Indawgyi system and its feeder streams.
As a Schistura from a tributary stream rather than the open lake, it almost certainly occupies the same niche as its genus-mates: clear, fast-flowing, well-oxygenated water over a mixed substrate of stone, gravel and sand. Exact temperature and pH readings for the type stream have not been published in the sources available here; given the setting — a highland tributary in Kachin State — cooler, flowing stream conditions rather than warm, still water are the reasonable expectation, but this remains an inference from the region and genus rather than a directly measured fact.
Feeding
No diet study specific to Schistura indawgyiana has been located. Across the genus, Schistura are benthic micro-predators that work the stream bottom for small invertebrates — insect larvae, worms and small crustaceans — rather than grazing algae or taking much plant matter. There is no reason from its habitat or relatives to expect this species to differ from that pattern.
In captivity, related Schistura take sinking frozen and live foods readily — bloodworm, brine shrimp and similar small prey items — and are generally reluctant flake-eaters. Any care attempt with this species should follow that genus-wide template of small, sinking, meaty foods rather than flake or algae wafers, while recognising that no feeding trial has been published for the species itself.
Mating
Nothing specific to Schistura indawgyiana's courtship or spawning behaviour has been documented. The genus and family offer little to extrapolate from either: Nemacheilidae stone loaches are not known for elaborate courtship, and sex differences in Schistura are typically subtle and inconsistently documented species by species.
Given that this species is known from a single wild collection and has no aquarium-keeping history, there is no basis to describe pairing behaviour, seasonal triggers or spawning cues with any confidence. The honest position is that its reproductive biology is simply unstudied.
Breeding
As with virtually all stone and brook loaches, Schistura indawgyiana should be assumed to be an egg-scatterer: eggs released over gravel or among stones in flowing water, with no parental care afterward. This is the pattern for the family generally and there is no report — from the wild or from any aquarium — that suggests otherwise for this species.
There is no record of S. indawgyiana being kept or bred in the aquarium hobby. Most Nemacheilidae species are rarely or never spawned in captivity, and a newly described, single-locality endemic like this one is far outside anything the trade has worked with. Any breeding account for this fish would be speculation; the correct, honest statement is that it is unbred in captivity and its captive reproductive biology is unknown.
In the aquarium
Schistura indawgyiana is not established in the aquarium trade, and no husbandry record for the species could be located. It should not be assumed available, and nothing here should be read as a stocking recommendation drawn from direct experience with the fish.
What can be said comes from its genus and setting: Schistura generally need a flowing, well-oxygenated, cool-to-cooler stream-style tank with a mixed rock, gravel and sand substrate rather than a warm, static community setup, and — like other Nemacheilidae — are likely to share the family's sensitivity to copper-based medications and full-strength treatments given their near-scaleless skin. Anyone encountering this species, whether in a research context or a rare specialist import, should treat it as an unknown quantity requiring cool, clean, current-driven water and cautious, reduced-dose medication rather than standard community-tank treatment.
Conservation
Schistura indawgyiana has not been evaluated by the IUCN Red List; its status here is recorded as Not Evaluated (NE) rather than guessed. As a fish known from a single tributary stream of the Lake Indawgyi basin, it fits a common and concerning pattern among recently described Nemacheilidae: a narrow-range, single-locality endemic with no formal conservation assessment and, consequently, no legal or policy protection tied specifically to it.
Lake Indawgyi's broader watershed carries recognised conservation value — it is a Ramsar wetland site and sits on UNESCO's tentative World Heritage list, in part because of its fish endemism — which offers some indirect protection to the wider basin. But that umbrella does not substitute for a species-level assessment, and threats common to small Southeast Asian highland streams (deforestation, agricultural runoff, water abstraction) could affect a single-stream endemic like this one disproportionately if they reach its tributary. There is no evidence in the available sources of aquarium-trade collection pressure on this species.