Freshwater cat fish Clarias batrachus was exposed to Butachlor, Imidacloprid and Sodium fluoride with lethal and sub-lethal concentration for 72 hrs and 21 days durations. Protein changes in liver and muscles were analyzed after exposure period. Imidacloprid and sodium fluoride caused remarkable protein loss lethal concentration but at sub-lethal level their toxicity was moderate. But Butachlor...

Adrenergic and cholinergic receptors have been studied in isolated skin melanophores of a catfish Clarias batrachus. Catecholamines induced a strong aggregatory effect on the melanophores. Melanosome aggregation induced by adrenaline and noradrenaline was partially blocked by alpha adrenergic receptor blockers and a beta receptor blocker. Cholinomimetic drugs aroused a significant dispersion of...

Catfish are important organisms used extensively in aquaculture. For this review, we focusing on specific species of catfish the genus Clarias, primarily Clarias batrachus, C. gariepinus and macrocephalus, because their widespread use aquaculture considerable amount information that has been amassed different aspects biology. This review summarizes available topics ranging from taxonomy geograp...

A variety of fishes consumed regularly are prone to pathogenic spoilage especially by different microbes. It is important find out microbiological quality fish that we consume protect the public health. Current research was conducted assess incidence Salmonella and Escherichia coli (E. coli) contamination in three selected catfish species namely, Ayer (Sperata seenghala), Pabda (Ompok pabda) Ma...

The present paper deals with the influence of starvation on fish which has great ability to adapt in starvation stress. In the present investigation, the effect of prolonged food deprivation on ascorbic acid contents of gonadal tissues has been observed in both the sexes of Clarias batrachus. The level of ascorbic acid content was found relatively higher in males than in females. The testes sho...

The present study was undertaken to find out the toxic effect of synthetic pyrethroid lambda cyhalothrin on the functioning of endocrine glands in freshwater catfish, Clarias batrachus. The fish were exposed to the pesticide for a period of 45 days at a sublethal concentration of 5.768 ppm. Analysis of hormone profile was carried out on the 15, 30 and 45 days of exposure to find out the alterat...

Glycogen is a multi-branched polysaccharide of glucose that serves as a form of energy storage in animals. The present paper deals with changes in the level of glycogen in Clarias batrachus, which was subjected to prolonged fasting of 40 days. Tissues of brain were selected for the study. Glycogen content was estimated by the calorimetric method of Kemp et al. (1954) as modified by Krishnaswamy...

Clarias serniosus, a new Southeast Asian walking-catfish species, is described from the Bolavens Plateau in southern Laos. The new species is a member of the C. batrachus species complex, and can be distinguished from congeners in the complex in having a combination of: occipital process length 15-17 % HL, head length 28.2-28.6% SL, head width 18.5-19.2% SL, head depth 13.0-13.7% SL, distance b...

Lectins play important role in innate immunity of animals. The affinity of the natural haemagglutinin of the giant freshwater prawn Macrobrachium rosenbergii towards vertebrate erythrocytes and its level with relation to sex, size and moult stages were studied. The strongest agglutinating titres in haemolymph of prawns were marked against guinea pig, chicken, Clarias batrachus, and rabbit eryth...

In the present study, the female Clarias batrachus, held under long photoperiod (13L:11D), were exposed to high water temperature either constantly (24 h) and/or in form of thermopulse of 6 h and 12 h durations, separately, at different times of the day/night cycle for six weeks during the early post-spawning and late post-spawning phases of its reproductive cycle. The effects of high water tem...