Classification / Names
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Siluriformes (Catfishes) >
Amblycipitidae (Torrent catfishes)
Etymology: Amblyceps: Greek, amblys = soft, darkness + Latin, ceps = head (Ref. 45335); waikhomi: Named for Waikhom Vishwanath for his outstanding contribution to freshwater ichthyology in the Indian subcontinent..
Environment: milieu / climate zone / depth range / distribution range
Ecologia
; acqua dolce demersale; pH range: 6.8 - ?. Subtropical; 24°C - ? (Ref. 118109)
Asia: Nongkon stream draining to Noa Dehing River (Brahmaputra basin), Arunachal Pradesh, India.
Size / Peso / Age
Maturity: Lm ? range ? - ? cm
Max length : 4.5 cm SL maschio/sesso non determinato; (Ref. 118109)
Short description
Chiavi di identificazione | Morfologia | Morfometria
Spine dorsali (totale) : 1; Raggi dorsali molli (totale) : 6; Raggi anali molli: 13. Amblyceps waikhomi is diagnosed from all congeners in having a deeper body (depth at anus 17.0-20.3% SL vs. 7.6-16.9) and fewer total vertebrae (34-35 vs. 37-48), with exception of A. mangois and A. serratum). It can be differentiated from A. mangois by the absence (vs. presence) of strongly-developed projections on the proximal lepidotrichia of the median caudal-fin rays and by having a longer, wider, and deeper head (length: 22.-24.3% SL vs. 18.8-21.3, width: 20.0-21.9% SL vs. 17.1-18.3, depth: 13.9-18.0% SL vs. 11.6-13.2); and from A. serratum by having a posteriorly smooth (vs. with 4-5 serrations) pectoral spine, and unequal jaw length (lower jaw longer and weakly-projecting anteriorly vs. equal upper and lower jaws). It is also distinguished from A. murraystuarti, A. torrentis, A. apangi, A. laticeps, and A. cerinum by its deeply forked caudal fin (vs. emarginate or truncate) (Ref. 118109).
Found in slow moving stream (water current 0.16 m/s) with a bottom substrate dominated by sand, occasionally associated with mud. Usually occurs under submerged logs and bamboo. The dominant macrophyte in the stream is water hyacinth. The following chemical parameters of the stream were recorded: DO 6.75 mg/l, DCO2 1.53 mg/l, alkalinity 66.06 mg/l, and hardness 71.8 ± 3.05 mg/l. The physical parameters of the stream were pH 6.78, air temperature 23.8 ±0.87°C, water temperature 23.5 ±0.96°C, transparency 79.5 ±1.93 cm, and conductivity 173.33 μS. (Ref. 118109).
Life cycle and mating behavior
Maturities | Riproduzione | Spawnings | Egg(s) | Fecundities | Larve
Darshan, A., A. Kachari, R. Dutta, A. Ganguly and D.N. Das, 2016. Amblycepswaikhomi, a new species of catfish (Siluriformes: Amblycipitidae) from the Brahmaputra Drainage of Arunachal Pradesh, India. PLoS ONE 11(2):e0147283. (Ref. 118109)
IUCN Red List Status (Ref. 130435)
Threat to humans
Harmless
Human uses
Strumenti
Special reports
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Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00661 (0.00311 - 0.01404), b=3.01 (2.82 - 3.20), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
Trophic level (Ref.
69278): 3.1 ±0.4 se; based on size and trophs of closest relatives
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
