International Journal of Fisheries and Aquatic Studies
2020, Vol. 8, Issue 3, Part H
Seasonal movement of fish species of Rajshahi and Khulna division in BangladeshAuthor(s):
Nahid Sultana, Mona Ashis Chowdhury and Md ShahnawajAbstract:
In the present study 40 species were recorded as seasonal migratory. Out of 40 species recorded in concurrent swimming mode sample, only 29 species were recorded in counter current swimming mode samples. In counter current swimming mode more species were recorded to migrate from beel to river. On the other hand more species were recorded to migrate from upland to beel. The most frequently occurring taxa were small fish species like Chanda sp., Puntius sp.
and Chela sp
. etc. Major carps (Labeo rohita
, L. bata, L. gonius, Cyprinus carpio, Ompok pabda
) were less frequently present in the samples.
Body length data of the fish sampled indicate that even the smallest fish made use of the fish pass. The values ranges between 1.0 to 1.5 cm were frequently recorded and lengths as small as 1.5 cm were recorded in countercurrent swimming mode against relatively high-calculated velocity. However, a few large individuals L. calbasu (7.5 – 22.0 cm), L. gonius (4.5 – 25.7 cm), Catla catla (20 – 40 cm), Wallago attu (36.0 – 60.0 cm) and Notopterus chitala (17.0 – 27.0 cm) in particular found to be migrated through the water channel During the month of May to July, it causes a heavy rainfall. At that time live fishes Anabas testudineus, Clarias batrachus, Heteropneustes fossilis etc. migrated to upland from beel against the water current. Their fry and fingerling migrate actively or passively to the beel during the month of August to November. Pages: 639-645 | 115 Views 9 DownloadsDownload Full Article:
How to cite this article:
Nahid Sultana, Mona Ashis Chowdhury, Md Shahnawaj. Seasonal movement of fish species of Rajshahi and Khulna division in Bangladesh. Int J Fish Aquat Stud 2020;8(3):639-645.