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Age and growth in the catfish Tachysurus tenuispinis (Day)

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Relation http://eprints.cmfri.org.in/635/
 
Title Age and growth in the catfish
Tachysurus tenuispinis (Day)
 
Creator Dan, S S
 
Subject Catfish
 
Description At Waltair, the average size of Tachymrus tenMbpinis during 1973-76 was
17.5, 23.7, 29.5, 35.5^aiid 39.5 om at the end of 1.0, 1.5, 2.0, 2.5 and 3.0 years
respectively. The back-calculated lengths of fish at the time of formation of rings
in tile opercular bone were 11.16, 18.74, 24.64, 30.03, 35.70. 40.09 and 44.01 cm
at tlie end of 0.5, 1.0, 1.5, 2.0, 2.5, 3.0 and 3.5 years respectively. The mean lengths
of fish with II to VII rings in the otolith were 17.9, 25.2, 30.4, 35.4, 39.7 and
42.6 om lespectively. There was, thus, a close agreement in the lengths derived
fnom all the three methods at diffeiient ages. The growth rings in the opeircular
ibones and otoliths are formed twice a year in June and December and poor feeding
is probably the causative factor for the formation of rings, von JBeirtalinffy
growth data obtained from the present studies and the calculated values were in
close agreement with tho^e observed.
 
Publisher CMFRI/ICAR
 
Date 1980
 
Type Article
PeerReviewed
 
Format application/pdf
 
Language en
 
Identifier http://eprints.cmfri.org.in/635/1/Article_29.pdf
Dan, S S (1980) Age and growth in the catfish Tachysurus tenuispinis (Day). Indian Journal of Fisheries, 27 (1&2). pp. 220-235.