The Knight Goby is an elegant fish with a silver-gray body, dark spots, and a sleek, knight-like appearance. It is a fascinating species that thrives in brackish or freshwater tanks. Specifications: Scientific Name: Stigmatogobius sadanundio Origin: South and Southeast Asia (India, Thailand, Indonesia) Maximum Size: Up to 4 inches (10 cm) Tank Requirements: Minimum 30 gallons; prefers slightly brackish water…