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Siluriformes (Catfishes) >
Sisoridae (Sisorid catfishes) > Sisorinae
Etymology: Gagata: Local fish name, kenyakatta, in Bengal; melanopterus: From Greek, masculine adjective..
More on authors: Roberts & Ferraris.
Environment: milieu / climate zone / depth range / distribution range
বাস্তুসংস্থান
; স্বাদু পানি সমুদতলে ভাসমান বেনথোপেলাজিক. Tropical
Asia: Irrawaddy, Sittang and lower Salween basins in Myanmar.
আকৃতি / ওজন / Age
Maturity: Lm ? range ? - ? cm
Max length : 15.8 cm SL পুরুষ/ লিঙ্গ অনিধর্ারিত ; (Ref. 40780)
পৃষ্ঠীয় কাঁটা (মোট ) : 1; পৃষ্ঠীয় নরম পাখনা দন্ড (মোট ) : 6; কশেরুকা : 39 - 41. Body silvery, either without marking or with faint saddles. Fins, except caudal fin, blackened at least distally. Dorsal spine tip not reaching to adipose-fin origin when adpressed. Premaxilla with 2 rows of teeth. Adpressed anal fin fails to reach first lower procurrent caudal-fin rays. Mouth near snout tip; oral opening transverse, entirely ventral to nares; free lips absent. Anal fin with 4-6 simple rays, 10-12 branched rays. Differs from G. gagata in having its dorsal spine not reaching adipose-fin origin (versus reaching and even extending beyond adipose origin when dorsal-spine is depressed); smaller pelvic fin not reaching anal-fin origin (versus reaching anal-fin origin); last anal-fin ray not reaching first lower procurrent caudal-fin rays (versus extending posteriorly to origin of lower procurrent caudal-fin rays); complete bony encapsulation of the swim bladder (versus incomplete); and 2 rows of teeth on the premaxilla (versus 4 rows) (Ref. 40780).
Life cycle and mating behavior
Maturities | প্রজনন | Spawnings | Egg(s) | Fecundities | শুককীট
Roberts, T.R. and C.J. Ferraris Jr., 1998. Review of South Asian sisorid catfish genera Gagata and Nangra, with descriptions of a new genus and five new species. Proc. Calif. Acad. Sci. 50(14):315-345. (Ref. 40780)
IUCN Red List Status (Ref. 130435)
Threat to humans
Harmless
Human uses
হাতিয়ার
Special reports
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ইন্টারনেট সুত্র
Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5039 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00676 (0.00307 - 0.01489), b=3.01 (2.83 - 3.19), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
ট্রফিক পর্যায়ে (Ref.
69278): 3.2 ±0.4 se; based on size and trophs of closest relatives
স্থিতিস্থাপক (Ref.
120179): মাধ্যম , সর্বনিম্ন প্রজন দ্বিগুনের সময় ১.৪-৪.৪ বৎসর (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
