Taxonomy & naming
The species was described in 1965 by Petru Bănărescu and M. R. Mirza, originally placed in the wastebasket genus Nemacheilus (also rendered Noemacheilus in older literature) that once held most of Eurasia's stone loaches. As ichthyologists worked through that genus over subsequent decades it was moved to Schistura, and it is now placed in Paraschistura, one of several genera split out to reflect the true diversity hidden inside the old Nemacheilus/Noemacheilus catch-all. The parentheses around the authority reflect this history of reclassification since the original description.
Paraschistura lindbergi belongs to the family Nemacheilidae, the stone or brook loaches, by far the largest family within the loach superfamily Cobitoidea. The Catalog of Fishes is the authority for the currently valid combination, Paraschistura lindbergi; older records and some regional literature may still list it under Nemacheilus, Noemacheilus or Schistura.
Morphology
As a member of Nemacheilidae, Paraschistura lindbergi has the classic stone-loach build: an elongate, cylindrical body, a small ventral mouth with barbels for probing the substrate, and small paired fins set low on the body for holding position against current. FishBase records a maximum size of around 2.5 in standard length, making it a genuinely small fish even by loach standards.
Detailed morphological data — fin ray counts, scale pattern, exact colouration — is not captured in the sources available here, and this is typical of many single-region Nemacheilidae: the species is diagnosable to ichthyologists from museum material but has not been popularised with a photographed colour description the way trade species have. Where it applies to Paraschistura generally, stone loaches carry a small erectile suborbital spine and very fine, often reduced scalation, leaving the skin close to naked — a point of caution for anyone handling or medicating a related species.
Habitat
Paraschistura lindbergi is native to fresh water in Afghanistan and Pakistan, part of the wider spread of stone loaches across Central and South Asia. Nemacheilid loaches in this region typically inhabit clear, cool-to-cool-temperate streams and rivers with moderate to fast current and rocky or gravel substrates — the kind of well-oxygenated running water typical of foothill and montane drainages rather than warm, still lowland habitat.
No site-specific habitat description beyond country-level distribution is available in the sources consulted, so this account describes the habitat typical of the genus and family in the region rather than claims specific to this species. It should be treated as a fast-water stream fish of the Afghanistan–Pakistan region until more detailed field data comes to light.
Feeding
Like other small Nemacheilidae, Paraschistura lindbergi is presumed to be a benthic micro-predator, picking small invertebrates — insect larvae, worms and other invertebrate prey — from the substrate of the streams it inhabits. This follows the well-documented feeding pattern of its close relatives in Schistura and Paraschistura rather than any species-specific study, as the sources available do not report direct diet data for this species.
No aquarium feeding record exists for this species since it is not established in the hobby; a related fast-water micro-predator loach would be expected to take small live and frozen foods and sinking preparations readily, and to largely ignore flake left at the surface.
Mating
No information on sexing, courtship or spawning behaviour for Paraschistura lindbergi is available in the sources consulted — this is a data-sparse species with no aquarium or field breeding record on file. Stone and brook loaches as a group are egg-scatterers with no pair-bonding or parental care, and there is no reason to expect this species departs from that pattern, but nothing specific can be reported for it.
Breeding
As with the rest of Nemacheilidae, Paraschistura lindbergi would be expected to spawn as an egg-scatterer, releasing eggs over gravel or among stones in fast-flowing water with no parental care of the eggs or fry afterward. This is the pattern documented across the family's better-known species.
There is no record of this species being bred in captivity, which is unsurprising: it is not established in the aquarium trade, and even well-known stone loaches are rarely spawned at home. The honest picture is that breeding data for Paraschistura lindbergi simply does not exist in the literature available here.
In the aquarium
Paraschistura lindbergi is not a fish of the aquarium trade — there is no evidence in the sources consulted that it has ever been kept or offered commercially. Any care guidance here is therefore inferred from its family and region rather than from direct experience with the species: a small Central/South Asian stone loach of this kind would be expected to need cool-to-moderate, clear, fast-flowing, well-oxygenated water over a gravel or rocky substrate, in keeping with the streams it comes from, and — like its scaleless relatives — to be sensitive to copper-based and full-strength medications.
Given the near-total absence of husbandry data, a keeper who somehow obtained this species should treat it cautiously and conservatively: prioritise water quality and flow, avoid warm, still community setups, and expect a small, retiring bottom fish rather than a showy centrepiece.
Conservation
Paraschistura lindbergi is listed by the IUCN Red List as Data Deficient, assessed 30 August 2019. This reflects a genuine gap in knowledge rather than a lack of concern: as a narrow-range stream endemic of Afghanistan and Pakistan, its population trend, precise distribution and the pressures it faces have not been sufficiently studied to assign a status of Least Concern, threatened, or otherwise.
There is no evidence of any aquarium trade in this species, so collection for the hobby is not a documented pressure. Broader threats typical of the region's freshwater stream fauna — water abstraction, damming, and habitat degradation in Afghan and Pakistani watersheds — are plausible general concerns for a fish of this range, but no species-specific assessment of them is available.