All Fishes Siluridae Kryptopterus

  • Kryptopterus geminus
  • Kryptopterus geminus
Hop to next section All Fishes Data Sheet
Scientific Name Kryptopterus geminus  Ng, 2003
Common Name
Type Locality Stung Treng, Mekong River 2 kilometers downstream from mouth of Tonle San on sandbars, Mekong River drainage, Cambodia, 13°31'N, 105°56'E.
Pronunciation Cry top ter russ. - gem - ee - nus
Etymology Kryptopterus: From the Greek kryptos, meaning hidden and pteryx, meaning fin; in reference to the reduced or absent dorsal fin of this group of fishes. From the Latin geminus, meaning twin-born; in allusion to the close morphological similarity of this species to K. cryptopterus. Used as a noun.
Hop to next section Species Information
Size 171mm or 6.7" SL. Find near, nearer or same sized spp.
Identification Kryptopterus geminus,together with K. cryptopterus, can be distinguished from congeners by the dorsal profile lacking anuchal concavity and short maxillary barbels extending to the base of the pectoral fin. Kryptopterus geminus can be further distinguished from K. cryptopterus in having a narrower head (9.5–12.0% SL vs. 12.2–14.2), longer anal fin (62.2–72.7% SL vs. 57.2–62.9) and snout (39.5–45.3%HL vs. 35.1–39.8), and more laterally-placed eyes (only ventral half, vs. ventral two-thirds, of the orbital margin visible when the head is viewed ventrally).
Hop to next section Habitat Information
Distribution Asia: Mekong, Mae Khlong, Bang Pakong and Chao Phraya River drainages in mainland Southeast Asia.
Mekong (click on these areas to find other species found there)
Thailand Waters, Meklong (click on these areas to find other species found there)
Thailand Waters, Bang Pakong (click on these areas to find other species found there)
Thailand Waters, Chao Praya (click on these areas to find other species found there)

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IUCN Red List Category Least Concern, range map and more is available on the IUCN species page. Last assessed 2011.
Hop to next section Husbandry Information
Breeding Reports There is no breeding report.
Hop to next section Further Information
Reference Zootaxa No. 305, pp 2, Figs. 1, 2a.
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Last Update 2020 Oct 12 23:11 (species record created: 2012 Feb 01 00:51)