(From the collection of Andrew Rao) (1) Arnob
Dorsal spines (total): 1; Dorsal soft rays (total):
6; Anal soft rays: 6; Vertebrae: 32 - 34. Differs
from Sisor rabdophorus and Sisor rheophilus in possessing
a deeper body (body depth at anus 5.6-5.8% SL vs.
4.2-5.4). Can be differentiated further from Sisor
rheophilus in having a wider head (15.7-15.9% SL vs.
14.5-14.8), shorter snout (54.0-55.9% HL vs. 56.2-60.3),
smaller eye (9.9-11.4% HL vs. 13.2-16.3), fewer serrations
on posterior edge of pectoral spine (10 vs. 7-22)
and wider nuchal plate (width 1.1-1.2 times length
vs. width equal to length), and from Sisor torosus
in having a more slender body (body depth at anus
5.6-5.8% SL vs. 6.0-7.8) Aquarium Care:
A fine sandy substrate is very much preferred, since
these fish will spend a considerable amount of time
burrowing into the substrate. This species is sensitive
to temperature and oxygen levels, so the water should
be on the cool side and well-oxygenated, preferably
with a moderate to strong current. Additional tank
decor can be in the form of large driftwood and/or
River drainage, India and Bangladesh. Type
locality: India, Assam State, Brahmaputra
River drainage, Dibrugarh.
Froese, R. and D. Pauly.
Editors. 2009. FishBase. World Wide Web electronic
publication. www.fishbase.org, version (01/2011).
Ng, H.H., 2003. A revision of the south Asian
sisorid catfish genus Sisor (Teleostei: Siluriformes).
J. Nat. Hist. 37:2871-2883.