Padma Multipurpose Bridge Project

3.2.4.1 Species of Conservation Significance70. The withering of the river Padma and its tributaries for more than last 30 years has resultedin extinction of several species of fishes. According to Flood Action Plan (FAP)-17, (Fisheries Studiesand Pilot Project, 1993), 260 species of fishes were found in the northwestern region of the country ofwhich 143 belonged to small fishes. More than 41 species of small fishes are on the verge ofvulnerability now. These include: Shankha, Fansha, and four varieties of Puti, Khayera, Pabda,Panikoi, Bancha, Milon, Yellow Tengra, Bele, Ganges Pangas fish, Bheda fish and Bou fish. IUCNhas made a list of vulnerable species of different areas of Bangladesh. Based on the red list, 29species of conservation significance in the Padma is provided in Table 3-20.Table 3-20: Significant fish species and there statusScientific name Local name Common name CE EN VULabio calbasu Calbaus Black Rui Chitala chitala Citol Humped Feather back Cirrhinus reba Bhangna Reba carp Labio bata Bata Bata Labio L.nandina Nandil Nandi Labeo L. pangusia Ghora mass Pangusia Labio P.sarana Sarputi Olive Barb P.ticto Tit puti Ticto Barb Raiamas bola Bol Indian trout Rasbora rasbora Leuzza darkina Gangetic Scissortail Rasbora Botia dario Beti Necktie Loach Mystus aor Aor Long whishkeper Cat fish M. seenghala Guizza Ayer Gaint river catfish Mystus cavasius Golsa Tengra Gangatic Mystus Ompok bimaculatus Kani pabda Indian Buutter Catfish Ompok pabda Modhu pabda Pabdah Catfish Ompok pabo Pabda Pabo Catfish Clupisoma garua Gharua Garua Bacha Eutropiichthys vacha Bacha Batchwa bacha Bagarius yarrellii Bagghair Gangetic Goonch Chaca chaca Cheka Indian Chaka Monopterus cuchia Kuicha Cuchia Chanda nama Nama Chanda Elonget Glass-perchlet Pseudambassis ranga Ranga chanda Indian Glassy fish Nandas nandas Meni Mud perch Ctenops nobilis Neftani Indian paradise fish Channa marulis Gajar Giant snakehead Macrognathus aral Tara baim One –strip spinyeel Mastacembalus armatus Sal baim Tire-track Spinyeel Note: CE= Critical Endangered, EN= Endangered, UV =Vulnerable3.2.4.2 Fish Suitable Hydrology of the Padma71. The project area falls under Bio-ecological zone 4b which is the only active flood plain inSouth-west portion of the country. This floodplain comprises of ridge, basins and old channels. ThePadma alluvium is readily distinguished from the old Brahmaputra, Jamuna and Meghna sedimentsby its high lime contents. The river channel is constantly shifting within its active flood plain. Hugenumber of stagnant water bodies and river channels support a habitat of rich fisheries biodiversity.Fisheries resources of the study area are diversified with different fresh water fish habitats due to itscomplex hydrological characteristics i.e. depth, flow dynamics, silt concentration, channels andcreeks, etc. The recorded maximum velocity ranging from 4-5 m/sec, with depth varying from 20m to21m, with an annual silt load of 492 ton/sq km. The slope flattens to 1:37,700 for a distance of 120 kmfrom Goalandaghat to Chandpur. The drainage network of the Padma is also very complex and3-45