The noun A. TESTUDINEUS has 1 sense: 1. a small perch of India whose gills are modified to allow it to breathe air; has spiny pectoral fins that enable it to travel on land. Familiarity information: A. TESTUDINEUS used as a noun is very rare. Dictionary entry details.
If the urine appears thick or has granules in it I'd suspect bladder stones/crystals or infection. The bright yellow color can sometimes indicate a liver or gallbladder problem.
Actually, your urine is yellow because your body only absorbs what it needs and the rest is excreted. If your body didnt excrete the excess then you would have an overdose of vitamin B. It is a good sign that your urine is yellow. It means your body is working properly in conjunction with the vitamin B. Your body isnt going to absorb what it doesnt need.