Marbled Goby - Oxyeleotris marmoratus
This oddball fish is one of the larger sized Gobies and can be considered a monster fish as they can reach around 28-30" in the wild though they seldom surpass 12" in aquaria. They prey on just about anything they can fit in their mouth. The Marble Goby will accept a number of different foods such as bloodworms, brine shrimp and other meaty foods.
Size is about 2-3" roughly.