Midas blenny compatible with other blennies?

I would guess this combo would be ok since the midas is a planktivore and the lawnmower is an algae eater.

Of course this is just a guess since I've never tried it and your fish may have a different opinion.
 
My mother had a Midas and a Starry in the same tank, and they were territorial with each other, but no serious harm was done. How large is your tank? If it is large enough that each fish can define its own territory and they can get away from each other if picking starts, then it would probably work.
 
My larger Midas blenny gets along fine with my smaller Starry blenny (added a month after the Midas). They're both in my 180 gal tank, so there's plenty of rocks and territory for both of them, plus they swim/perch at different levels of the tank.
 
Usually no problems at all with Midas and other blennies. I have one with a small Java Blennie and they don't even acknowledge each other. I've had midas with Starry in the past without issues too.
 
i have a midas with a white bar blemy and i introduced the white bar over a year after the midas with no issues
 
My midas is a jerk, but he is in a tank half your size so it may work for you. I really think it's up to the individual when it comes to dealing with similar shaped fish.
 
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