The study from March 2011 to February 2012 in the Tanguar haor, Sunamgonj, Bangladesh found three habitat types of vegetation composition as upland, emergent and aquatic which included submerged plants (23), free floating plants (12), rooted floating plants (21), sedges and meadows (35), reed swamp (7), freshwater swamp forest (9), crop field vegetation (21) and homestead vegetations (36) species in the haor. The haor was rich in faunal composition that providing habitat of 122 species of fishes, 28 amphibians, 26 reptiles, 154 birds and 14 mammals in winter season.