Scientific name: 
Ophioblennius steindachneri
Distinctive features: 
1. Dark ocellated spot behind eye. 2. Two or three wide irregular bars behind spot.
Size: 
4-7 in. max. 9 in.
Olive to brown; reddish circle around eye. Blunt head with large lips and obvious cirri. Can lack bar markings (as shown in this picture).