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.
Darkened urine is urine that is dark yellow, brown, dark red, or red, and it may range from slightly dark to considerably dark. A change in urine color may be temporary, or it may be persistent. The duration and course of darkened urine can vary widely, depending on the cause.