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.
Mucus threads in urine appear when someone suffers from some kind of infection. Affected individuals will notice that their urine appears cloudy. These mucus threads cannot be seen by the naked eye, but they do appear like small ribbons when viewed under a microscope.