do lawnmower blennies jump?

Beemo

Moved On
my tank is uncovered and about 1" from the top. i just bought a lawnmower blenny and im worried about finding him on the floor.
do they really jump often or is this just a rare occurance?
i was wondering if he can perch ontop of the power head and jump out that way?
 
You could try some plastic netting or the like to keep fish in the tank. I had a Swiss basslet (Liopropoma rubre) jump once throuh a small opening, and have since decided that most any fish might end up jumping if startled.
 
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