Studies on the competitive intestinal absorption of amino acids, and sugars in two teleost fishes.

In both fishes Ophiocephalus punctatus and Heteropneustes fossilis, the compound of the same group inhibited the transport rate of another compound such as, both glucose and fructose inhibited the uptake of xylose. Glucose was comparatively more inhibitory in nature than fructose. Transport of one amino acid was also inhibited in the presence of another amino acid. In glycine transport, leucine was stronger inhibitor than tyrosine. Almost similar results have been observed in both fishes irrespective of different feeding habits.