The Lawnmower Blenny (Salarias fasciatus), usually grow to a maximum of 3-5 inches. They need plenty of places to swim and hide. They also need alot of live rock, as they eat the live organisms, algea, and other things left behind by the others, they also enjoy seaweed. They are very peaceful towards the other fish in the tank. Lawnmower Blennies are quite the character to watch, they are fiesty towards the rocks and that is about it. Tank Temp should be kept around 72-78F. As with all of your species you want to keep the water quality high for them, that is if you want to keep them alive *S*. If you have any question, comments or concerns, feel free to e-mail us at Kreedy99@yahoo.com.