Lawn Mower Blenny feeding

I believe that most LB will only eat algae in the tank and on the rockwork.  I had one and loved him until he went carpet surfing (during one of the only times the eggcrate was not on my tank).   Mine never ate prepared food, only algae.  Really cool fish. 
If you don't have enough algae I would be afraid that he will continue to lose weight.  At that point you should try and find him a good home.

 

take a rock and put it in tapwater made saltwater sit it near a window with airation and let algae grow on it. should work?

 

Well, I think it all depends if you have algae for him to eat that is growing or available somewhere in your tank.  If you do, and if he is eating it then you should be ok.  Trying to "grow" algae really isn't a good solution or one that you are going to be able to keep going.  If the fish is eating you are good to go and if he is not or you don't have the food for him then you can either take him back to the fish store or find someone to buy him from you.  Better that than worrying about him starving to death.

 

I realized I really missed my lawnmower blenny so I bought one last weekend.  (Mine went carpet diving last year.)  What animated little creatures they are!   I was just wondering how yours is doing?