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Home / Fishes / Carp, barbs, minnows, loaches / Cobitidae / Iksookimia yongdokensis

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Iksookimia yongdokensis

Iksookimia yongdokensis

Fishes › Carp, barbs, minnows, loaches (Cypriniformes) › Cobitidae (Spined loaches)

Care follows the spined loaches guide below.

Aquarium hobby
Experience: Easy
FamilySpined loaches
Adult lengthup to 6.3 in
WaterFreshwater

Care at a glance

Species-specific aquarium care

  • Tank: At least 24 in long and 12 in front to back for one adult (adults commonly reach about 2.7 in / 6.9 cm; the largest recorded was 3.5 in).
  • Water: Freshwater.
  • Layout: Lives on or near the bottom: floor space and hiding places matter more than height.
  • Availability: Rarely or never seen in the aquarium trade; expect to source it from specialists or not at all.

Calculated from this species' own FishBase record: tank size from its typical adult length and swimming zone, water values from its recorded ranges. The group guide below fills in general care.

Care guide

Species care notes

  • Tank: a base of at least 39 × 12 in (roughly 24 US gallons); space needed is rated “large tank”.
  • Water: a fairly wide range, from slightly acidic to slightly alkaline, 68–75 °F, pH 7–8, 5–15 dGH.
  • Behaviour: a shoaling fish best kept in a group of six or more; suited to a community tank.
  • Difficulty: Moderate (Seriously Fish rating).

Short excerpts from the species profile:

  • Setup: “Most importantly the water must be clean and well-oxygenated so we suggest the use of an over-sized filter as a minimum requirement.”
  • Diet: “Chiefly a micropredator feeding on chironomid larvae and benthic inveretebrates in nature.”
  • Breeding: “Presumably a seasonal spawner in nature but hasn't been bred in captivity as far as we know.”

From the Seriously Fish profile for this species, which has the full habitat, maintenance, diet, behaviour and breeding write-up 167

Group care guide

Spined loaches

Applies to most species in this group. Habitat: Spined loaches inhabit freshwater bottoms from tropical Pangio forest streams and swamps to temperate weather-loach streams, wetlands and paddy fields. Individual species can differ, so compare with the species numbers above and the linked sources.

The water range is for tropical P. semicincta; weather loaches require about 64–74°F for general care and should not be maintained as tropical fish indefinitely. Do not transfer these settings automatically to Cobitis paludica, taenia or sinensis, or Acantopsis dialuzona: verify species-specific care. Fish sold as P. kuhlii are often P. semicincta or relatives. Weather loaches are invasive outside their native range; the cited profile recommends indoor containment rather than outdoor maintenance. Level 2 describes the common Pangio/weather-loach pathway, not every cobitid.

Housing & setup

  • For Pangio semicincta, provide at least a 60 × 30 cm (24 × 12 in) footprint; adult Misgurnus anguillicaudatus need at least 120 × 45 cm (48 × 18 in).
  • Use soft sand for burrowing; coarse gravel can injure fish and inhibit feeding.
  • Provide shaded retreats beneath secured wood or smooth rocks, with leaf litter and low-light plants for Pangio.
  • Cover the aquarium securely and protect filter intakes against entry by small loaches.
  • Use mature biological filtration, gentle circulation and surface agitation rather than strong flow for Pangio and weather loaches.

Sources 892893894

Climate & lighting

Water70–79°F

Sources 892893894

Diet

  • Sinking complete foods reaching the bottom.
  • Live or frozen Daphnia and Artemia.
  • Bloodworms and small worms as part of a varied diet.

Sources 892893894

Social life

  • Keep Pangio in groups of at least five or six with peaceful companions. Weather loaches can be kept singly but appear more active with conspecifics; they may eat eggs, fry or tiny fish.

Sources 892893894

Health watch

  • Skin injuries and feeding impairment from unsuitable burrowing substrate.
  • Ammonia-related illness in immature aquaria.
  • Nutritional deficiencies if bottom dwellers receive insufficient suitable food.

Sources 892893894

Understanding the animal

This species is part of a group that hobbyists, aviculturists or zoos keep widely (Spined loaches), so it's included for completeness. It may be rare in captivity itself, or not kept at all. Use the group guide as a starting point and look for species-specific advice from experienced keepers.
In the wild

In the wild

From this species’ own FishBase record (habitat, bottom type, water and breeding data), not its family. Good care copies these conditions.1

Where it livesLives in freshwater. Stays near the bottom. Usually in clear, slow moving shallow water over sand or small pebbles, or stagnant areas along upper and middle river courses. The species consumes a wide variety of food, including most aquatic algae, small crustaceans and aquatic insect larvae. The spawning season is supposed to be in May.
Water it lives inFreshwater.
ClimateTemperate climate.
  1. FishBase species summary: Iksookimia yongdokensis
Native climate (measured)

Native climate (measured)

Warm-season highsabout 82°F (up to 83°F in the hottest sampled areas)
Cool-season lowsabout 22°F (down to 15°F in the coldest sampled areas)
Average temperature51–57°F across sampled records
Relative humidity66–70% on average (driest month about 57%)
Rainfallabout 1175 mm a year
WintersCool to cold winters (lows around 22°F) in much of its native range. Seasonal slowdown may be relevant, but species-specific biology determines whether brumation or hibernation occurs.

Measured at 11 wild occurrence records sampled against WorldClim 2.1 climate data (1970–2000 averages). Air conditions in the range are ecological context, not enclosure settings: microhabitats such as burrows, leaf litter or basking rocks can be cooler, warmer or more humid.

From the sources

From the sources

Quoted from the matching sections of reputable sources for this exact species. Specialist databases are used first; Wikipedia (community-edited, CC BY-SA 4.0) only fills gaps. Other sources are short credited quotes.

Where it livesHome ranges Population dynamics Growth parameters Max. ages / sizes Length-weight rel. Length-frequencies Mass conversion Recruitment Abundance Life cycle Reproduction Maturity Maturity/Gills rel. — FishBase
Appearance and sizeMaximum length 8.9 cm sl male/unsexed. — FishBase
BiologyUsually in clear, slow moving shallow water over sand or small pebbles, or stagnant areas along upper and middle river courses. The species consumes a wide variety of food, including most aquatic algae, small crustaceans and aquatic insect larvae. The spawning season is supposed to be in May. — FishBase

Data and studies

The numbers

The numbers

Each bar is what one source reports. Where several sources weigh in, the dashed gold band marks their average.

Adult length

Average of sources4.5–4.9in
FishBase 1642.7–3.5
Seriously Fish species profiles 1676.3

Common length to maximum recorded length. Measured as standard length (snout to the base of the tail, not counting the tail fin). Fish in home aquariums often stay smaller than wild records.

Water temperature

Reported68–75°F
Seriously Fish species profiles 16768–75

Range the species tolerates; aim for the middle.

pH

Reported7–8
Seriously Fish species profiles 1677–8

Water hardness

Reported5–15dGH
Seriously Fish species profiles 1675–15

Minimum tank footprint

Reported39in
Seriously Fish species profiles 16739

Seriously Fish recommends a tank base of at least 39 × 12 in (about 24 US gallons).

Sources for this sheet

  1. FishBase (Froese & Pauly, eds.), version 24.07 Peer-reviewed researchThe global scientific database on fishes, maintained by a consortium of research institutions; every value is referenced.
  2. Seriously Fish species profiles Experienced keeper or breederLong-running aquarium reference written and peer-checked by experienced fishkeepers and ichthyologists; each profile covers habitat, tank size, water, diet, behaviour and breeding.
  3. Seriously Fish — pangio semicincta Experienced keeper or breederAdded in the 2026 source-checked care-guide review.
  4. Seriously Fish — misgurnus anguillicaudatus Experienced keeper or breederAdded in the 2026 source-checked care-guide review.
  5. Merck Veterinary Manual — Disorders and Diseases of Fish Zoo, university or veterinaryAdded in the 2026 source-checked care-guide review.