The round goby (Neogobius melanostomus) is a euryhaline bottom-dwelling species of fish of the family Gobiidae.

The sand goby (Pomatoschistus minutus), also known as a polewig"Polewig" and "pollybait" in Webster's Unabridged Dictionary or pollybait, is a species of ray-finned fish native to marine and brackish European waters from the Baltic Sea through the Mediterranean Sea and into the Black Sea where it occurs in sandy or muddy areas of inshore waters at depths of from .

The blind goby (Typhlogobius californiensis) is a species of fish in the goby family Oxudercidae, the only species in the genus Typhlogobius.

Fish that rests on seabeds.

Any of the species Gobius niger of ray-finned fishes, found in the eastern Atlantic Ocean and the Mediterranean and Black Seas.