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Bagarius yarrelli  (Sykes, 1839)


Lao (People's Democratic Republic) country information

Common names: [No common name]
Occurrence: native
Salinity: freshwater
Abundance: | Ref:
Importance: commercial | Ref: Aloun, P., 2006
Aquaculture: | Ref:
Regulations: | Ref:
Uses: no uses
Comments: Occurs in the Mekong tributary, the lower and middle Xe Bangfai (Ref. 27732). Found in Ban Hang Khone at Don Khone, 3 km below the fall line of the great waterfalls of the Mekong basin at Lee Pee (Ref. 9497). Undertakes upstream migration during the wet season in July-August through Hoo Som Yai at the Great Fault Line on the Mekong River, Champassack Province (Ref. 37771). Reported to migrate during the dry season in December/January in Southern Laos (Ref. 37769). Questionably found in the lower and middle Nam Theun (Ref. 27732). Also Ref. 4833, 30857, 35669, 37767, 43281, 50526.
National Checklist:
Country Information: https://www.cia.gov/cia/publications/factbook/geos/la.html
National Fisheries Authority:
Occurrences: Occurrences Point map
Main Ref: Kottelat, M., 1998
National Database:

Classification / Names

Actinopterygii (ray-finned fishes) > Siluriformes (Catfish) > Sisoridae (Sisorid catfishes) > Sisorinae
Common names | Synonyms | Catalog of Fishes (gen., sp.) | ITIS | CoL

Common names from other countries

Main reference

Size / Weight / Age

Max length : 200 cm SL male/unsexed; (Ref. 7050)

Environment

Freshwater; demersal; potamodromous (Ref. 51243)

Climate / Range

Tropical

Distribution

Asia: Indus and Ganges drainages, most of southern India east of the western Ghats, Mekong basin, Xe Bangfai basin (Laos) to Indonesia.
Countries | FAO areas | Ecosystems | Occurrences | Introductions

Short description

Vertebrae: 40 - 45. Pelvic-fin origin usually behind the base of the last dorsal ray; adipose-fin origin in front or above the anal-fin origin (Ref. 27732). Elongate neural spines 2-5, slender; abdominal vertebrae 21-24 (Ref. 35669). Eye circular, diameter 10-13 times in HL; head width 4.3-4.7 times in SL (Ref. 43281).

Biology     Glossary (e.g. epibenthic)

Adults occur in large rivers on the bottom, even with swift current (Ref. 12693). They never enter small streams (Ref. 37770). Found among boulders, often in the white water of the rapids where it apparently is indifferent to the strong current. Feed primarily on prawns but will take small fishes and aquatic insects (Ref. 6868). Spawn in rivers before the rainy season (Ref. 12693). Migrate in schools. Reported to migrate to follow its prey. Also reported that individuals follow Catlocarpio siamensis during the upstream migration (Ref. 37770). Apparently the main upstream migration begins close to the peak of flood when the current is very strong and the water is turbid (Ref. 37770). Sold fresh in markets. Not a highly esteemed food fish, because its fibrous flesh spoils rapidly and can cause illness (Ref. 12693).

IUCN Red List Status (Ref. 90363)

Threat to humans

  Harmless



Human uses

Fisheries: minor commercial

More information

Common names
Synonyms
Metabolism
Predators
Ecotoxicology
Reproduction
Maturity
Spawning
Fecundity
Eggs
Egg development
Age/Size
Growth
Length-weight
Length-length
Length-frequencies
Morphometrics
Morphology
Larvae
Larval dynamics
Recruitment
Abundance
References
Aquaculture
Aquaculture profile
Strains
Genetics
Allele frequencies
Heritability
Diseases
Processing
Mass conversion
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Pictures
Stamps, Coins
Sounds
Ciguatera
Speed
Swim. type
Gill area
Otoliths
Brains
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Tools

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Internet sources

Estimates of some properties based on models

Phylogenetic diversity index (Ref. 82805)
PD50 = 0.5625 many relatives (e.g. carps) 0.5 - 2.0 few relatives (e.g. lungfishes)

Trophic Level (Ref. 69278)
3.7   ±0.60 se; Based on food items.

Resilience (Ref. 69278)
Very Low, minimum population doubling time more than 14 years (Preliminary K or Fecundity.)

Vulnerability (Ref. 59153)
Very high vulnerability (90 of 100)
Price category (Ref. 80766)
Unknown