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m ) and plastic barrels (240 liters) to develop (Bloch/Bleeker) (Cyprinidae: Cypriniformes). J.
techniques for nonoculture of climbing perch, Bio-Sci., 2006, 14, 99-102.
Anabas testudineus, stinging catfish,
Heteropneustes fossilis and walking catfish, The exotic barb Puntius gonionotus was
Clarias batrachus for poor and landless people introduced into Bangladesh in 1987. Its faster
who have no access to pond. Stocking density for growth rate, nice taste and compatibility with our
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ditch was 10fry/m while that for barrel was 20 culturable species have made it very popular
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fry/m . The fishes were fed with 3-test diets viz. food fish in Bangladesh. With a view to
low-cost formulated feed (rice bran 20%, wheat providing some basic information towards
meal 10%, mustered oil cake 35%, poultry offal development of sustainable seed production of
35%), live foods (chopped snails and clams), and a the species, a study was undertaken to determine
commercial feed (Saudi-Bangla feed, starter 3: first the fecundity and ovary characteristics of the
month and grower-1: subsequent two months) and fish. The mean fecundity of 55 gravid females
designated as T 1, T 2 and T 3, respectively. Feeding (of 11 length group) of Puntius gonionotus was
rate was the same in all the treatments viz. 10% of obtained as 14321 with a range of 2254.67 to
body weight (first two months), 8% (third month) 6964.73 from fishes having a mean total length
and 6% (fourth month). T 1 and T 2 had three and mean body weight of 200.13 ± 20.58 mm
replications while T 3 had two replications. Water and 196 ± 34.379 g respectively. The
temperature was recorded weekly while fish relationship between the fecundity (F) and total
growth was monitored monthly. After 4 months' length (TL), total body weight (TW), ovary
rearing, H. fossilis and C. batrachus in ditches and length (OL) and ovary weight (OW) were
barrels attained higher average weight in T 2. established. Regression analysis was made and
followed by T 3 and T 1 while A. testudineus in the co-efficient of correlation (r) was calculated
barrels also attained higher average weight in T 2. for each of the following F-TL, F-TW, F-OL and
The variation in net weight gain by A. testudineus F-OW and the values of r were obtained to be
in ditch fed test diets T 2 and T 3 was not 0.84,0.84,0.95 and 0.96 respectively. In all the
significantly different (P>0.05) though the net gain cases linear relationships obtained were highly
in both T 2 and T 3 was significantly .(P<0.05) significant.
higher than that of T 1. The yield of climbing perch
as obtained from T 1, T 2 and T 3 was 988,1136 and 525 BHUIYAN, A.S. (Dept. of Zoology,
1185 kg/ha, respectively while that stinging catfish Rajshahi University, Rajshahi); ISLAM, M.K. &
was 395, 242 and 444 kg/ha and walking catfish ZAMAN, T. (Dept. of Fisheries, Rajshahi
was 1605, 2,099 and 1,654 kg/ha respectively. All University, Rajshahi). Induced Spawning of
the three species showed significantly lower Puntius Gonionotus (Bleeker). J. Bio-Sci., 2006,
growth rate in barrels than in ditches. 14, 121-125.
524 BHUIYAN, A.S. (Dept. of Zoology, An experiment was conducted to study the induced
Rajshahi University, Rajshahi); ISLAM, K. & spawning of Rajputi Puntius gonionotus (Bleeker)
ZAMAN, T. (Dept. of Fisheries, Rajshahi in the months of April, May, June and July 2005.
University, Rajshahi). Fecundity and Ovarian Five different doses of PG were used in the
Characteristics of Puntius Gonionotus experiment. In Puntius gonionotus all the different
doses (doses D 1-3.00 mg/kg, D 2-6.00 mg/kg, D 3-
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