Kryptopterus geminus • Siluridae • Cat-eLog

Cat-eLog Data Sheet
Scientific Name	**Kryptopterus geminus** (Ng, 2003)
Common Name(s)	None
Type Locality	Cambodia: Stung Treng,Mekong River 2 km downstream from mouth of Tonle San on sandbars, Mekong Riverdrainage.
Pronunciation	Kreep 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.
Species Information
Size	171mm (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).
Habitat Information
Distribution	Known from the Mekong (from the mouth upriver to Vientiane), Mae Khlong (the mouth to at least Kanchanaburi), Bang Pakong (from the mouth to at least Prachinburi) and Chao Phraya River (the mouth upriver to at least Ayutthaya) 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) (Click the map-icon to show/hide map of species distribution)
Further Information
References	Zootaxa Zootaxa 305: 1–11 (2003) "Kryptopterus geminus, a new species of silurid catfish (Teleostei: Siluridae) from mainland Southeast Asia"
Registered Keepers	None.
Breeding Reports	None.
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Last Update	2012 Feb 04 23:07 (species record created: 2012 Feb 01 00:51)

Cat-eLog Data Sheet

Scientific Name

Kryptopterus geminus (Ng, 2003)

Common Name(s)

None

Type Locality

Cambodia: Stung Treng,Mekong River 2 km downstream from mouth of Tonle San on sandbars, Mekong Riverdrainage.

Pronunciation

Kreep 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.

Species Information

Size

171mm (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).

Habitat Information

Distribution

Known from the Mekong (from the mouth upriver to Vientiane), Mae Khlong (the mouth to at least Kanchanaburi), Bang Pakong (from the mouth to at least Prachinburi) and Chao Phraya River (the mouth upriver to at least Ayutthaya) 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)