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Cladus: Eukaryota
Supergroup: Opisthokonta
Regnum: Animalia
Subregnum: Eumetazoa
Cladus: Bilateria
Cladus: Nephrozoa
Cladus: Deuterostomia
Phylum: Chordata
Subphylum: Vertebrata
Infraphylum: Gnathostomata
Superclassis: Osteichthyes
Classis: Actinopterygii
Subclassis: Neopterygii
Infraclassis: Teleostei
Superordo: Ostariophysi
Ordo: Siluriformes
Familia: Erethistidae
Genus: Erethistoides
Species: E. ascita - E. cavatura - E. infuscatus - E. montana - E. pipri - E. senkhiensis - E. sicula


Erethistoides Hora, 1950


Lakpa Tamang, Shivaji Chaudhry & Dhrupad Choudhury, 2008, Ichthyological Exploration of Freshwaters 19 (2): 185-191 [1]

Erethistoides is a genus of catfishes (order Siluriformes) of the family Erethistidae. It includes seven species, E. ascita, E. cavatura, E. infuscatus, E. montana, E. pipri, E. senkhiensis, and E. sicula.

Distribution and habitat

This genus is known from the sub-Himalayan region of the Indian subcontinent.[4] They are found in the Brahmaputra and Meghna drainages, northern India and Nepal.[5] E. ascita is found in the Mechi and Kosi River systems, Ganges drainage, Nepal and in rivers of lowland plains of southeastern Nepal.[1] E. cavatura originates from the Rapi River system of Narayani River basin in Nepal.[1] E. montana inhabits the Brahmaputra and Meghna drainages, northeast India.[5] E. infuscatus is from the Brahmaputra and Meghna River drainages in northeast India and Bangladesh.[2] E. pipri is only known from the Rihand River, Uttar Pradesh, India, a tributary in the Son River system.[6] E. senkhiensis is from Senkhi stream, Arunachal Pradesh, India.[3] E. sicula lives in the Mansai River drainage, Brahmaputra River basin, India. This species is found in large, shallow, fast-flowing streams with a sandy bottom. The fish usually hide in clumps of aquatic vegetation.[4]


Erethistoides is distinguished from all other erethistids by having the anterior margin of the pectoral fin spine with serrations directed toward the tip of the spine distally, and away from the tip proximally; however, the use of this as a diagnostic character has been questioned as some specimens of Erethistes filamentosa also show this trait.[4] They also lack a thoracic adhesive apparatus present in some other erethistids, and a smooth to granulate anterior margin on the dorsal fin spine, moderate gill openings that extend to the underside of the fish, a papillate upper lip, and 9–11 anal fin rays.[5] The head is depressed and triangular, and the body is elongate and compressed. The eyes are small to moderate and are placed dorsolaterally in the posterior half of the head. The pectoral fin spine is serrated anteriorly and posteriorly. The dorsal fin spine is serrated posteriorly but not anteriorly.[5]


1. ^ a b c d Ng, Heok Hee; Edds, David R. (September 2005). "Two new species of Erethistoides (Teleostei: Erethistidae) from Nepal" (PDF). Ichthyol. Explor. Freshwaters 16 (3): 239–248. http://www.pfeil-verlag.de/04biol/pdf/ief16_3_05.pdf.
2. ^ a b Ng, Heok Hee (2006). "Erethistoides infuscatus, a new species of catfish (Teleostei: Erethistidae) from South Asia". Ichthyol. Explor. Freshwaters 17 (3): 281–287.
3. ^ a b Tamang, Lakpa; Chaudhry, Shivaji; Choudhury, Dhrupad (2008). "Erethistoides senkhiensis, a new catfish (Teleostei: Erethistidae) from India". Ichthyol. Explor. Freshwaters 19 (2): 185–191.
4. ^ a b c d Ng, Heok Hee (2005). "Erethistoides sicula, a new catfish (Teleostei: Erethistidae) from India" (PDF). Zootaxa 1021: 1–12. http://www.mapress.com/zootaxa/2005f/zt01021p012.pdf.
5. ^ a b c d Thomson, Alfred W.; Page, Lawrence M. (2006). "Genera of the Asian Catfish Families Sisoridae and Erethistidae (Teleostei: Siluriformes)" (PDF). Zootaxa 1345: 1–96. http://www.mapress.com/zootaxa/2006f/zt01345p096.pdf.
6. ^ Ferraris, Carl J., Jr. (2007). "Checklist of catfishes, recent and fossil (Osteichthyes: Siluriformes), and catalogue of siluriform primary types" (PDF). Zootaxa 1418: 1–628. http://silurus.acnatsci.org/ACSI/library/biblios/2007_Ferraris_Catfish_Checklist.pdf.

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