Sleepy Cod (Oxyeleotris lineolatus) is a species of freshwater fish found primarily in Australia, particularly in slow-moving rivers and billabongs. This species is known for its sedentary behaviour and camouflage ability, blending well with its environment. It feeds on smaller fish and invertebrates and is often sought by anglers due to its size and ease of capture. The Sleepy Cod is part of the Terapontidae family and is notable for its distinct appearance, with a large head and smooth, rounded body.