International Science Community Association International Research Journal of Biological Sciences 2278-3202 8 8 2019 08 10 Study of fly ash toxicity to fish Heteropneustes fossilis (Bloch) 25 27 EN S. Ramya 1 Department of Botany, Queen Mary′s College, Chennai-600 004, India N. PadmaPriya 2 Department of Botany, Queen Mary′s College, Chennai-600 004, India R. Sheela 3 Department of Botany, Queen Mary′s College, Chennai-600 004, India T.V. Poonghuzali 4 Department of Botany, Queen Mary′s College, Chennai-600 004, India T.M. Simon 1 Department of Biological Sciences, University of Chester, UK Mammeri Adel 1 Animals Pathology and Reproduction Control Laboratory (P.A.G.R), Veterinary Institute, University of Constantine 1, El'Khroub-25100, Algeria and Department of Agronomic sciences, University of M\'Sila, M’Sila 028000, Algeria Kayoueche Fatima Zohra1 2 Animals Pathology and Reproduction Control Laboratory (P.A.G.R), Veterinary Institute, University of Constantine 1, El’Khroub-25100, Algeria Benmakhlouf Abdelmalek 3 Animals Pathology and Reproduction Control Laboratory (P.A.G.R), Veterinary Institute, University of Constantine 1, El’Khroub-25100, Algeria Khaja Bandh Nawaz A. 1 Department of Botany, Rayalaseema University, Kurnool -7, A.P., India Giridhar B. 2 Department of Botany, Rayalaseema University, Kurnool -7, A.P., India G. Meerabai 3 Department of Botany, Rayalaseema University, Kurnool -7, A.P., India Saukumarya Pradhan 1 School of Life Sciences, Sambalpur University, Jyoti Vihar, Burla-768019, India Rajendra Behera 2 School of Life Sciences, Sambalpur University, Jyoti Vihar, Burla-768019, India Prasanta Nanda 3 Dera Natung Government College, Itanagar, Arunachal Pradesh-791113, India > Short Communication 2019 4 21 2019 08 10 Heavy metals content offly ash of Hindalco power plant located near Hirakud Reservoir (Sambalpur, Odisha, India) was determined. Manganese metal was found to be in large amount where as cadmium metal with least concentration. The trend shows Mn>Zn>Pb>Cr>Cu>Ni>Co>Cd. When air breathing fish Heteropneustes fossilis was exposed to different concentration of fly ash to determine the LC50 value, no death was recorded in fishes exposed below 600g.L-1 of concentration for a period of 14 days. However, morphological abnormalities like loss of pigmentation, fins and haemorrhages were observed at 600g.L-1. Beyond this concentration mortality of fish was observed and the LC50 value was found to be 1000g.L-1 for 96hrs and 800g.L-1 for120 hrs. There was hundred percent deaths recorded in 1000g.L-1 after 120 hrs where as 132hrs in 800g.L-1. Copyright@ International Science Community Association