Biochemical compartmentation of fish tissues VII non-specific phosphomonoesterases in vital organs.

The viscera were compartmentalised in relation to non-specific phosphomonoesterase in a major carp, a catfish and a murrel. Activity was highest in the middle region of the kidney and lowest in the cephalic region of muscle. The observed variations in various regions of the viscera are discussed in relation to feeding habits, growth rate and biochemical make-up of the viscera.