My lawnmower blenny is evil

Here’s a picture I took of my lawnmower blenny. Since i’m having some algae issues, he’s been busy eating algae and more algae. Last weekend I thought I’d get him another friend. I figured my tank would be big enough and have enough algae to support two of them.

After a few hours of putting in the new one, I found them next to each other. sweet! they’re like buddies now! The next day, while looking at the tank, I saw the original one chase the new one around! Dang, territorial issues but I hoped it would eventually go away. It did cross my mind that at the speed and rate, one of them could jump out of my tank. The next day, it unfortunately did. Lesson learned. Only one blenny in a tank for me from now on.

{ 10 comments… read them below or add one }

FishGeek May 17, 2008 at 7:24 am

Nice Pic!! 😀

Kissyboots May 17, 2008 at 2:46 pm

He even LOOKS evil…:)

jeffry r. johnston May 19, 2008 at 5:29 pm

I’m sorry for your loss (great pic, though). My first saltwater fish was a Lawnmower Blenny and, alas, he was a jumper as well. RIP Blenny Kravitz

Johnny May 19, 2008 at 5:51 pm

haha. clever name. i named mine Dinkus cause he eats algae off the sand instead of the glass so he ends up eating sand also.

Sarah - June 7, 2008 at 7:54 am

Aww, that’s horrible.

I love lawnmower blennies.

Phil November 21, 2008 at 4:45 pm

I have a sweet LMB too. Soo far no chasing problems but I have just covered the top of my tank a little better. I had no idea they could be jumpers…. I have that!!

jay October 3, 2009 at 4:40 pm

How big was the tank? I have a heavily stocked 150 gallon… and I NEED a 2nd lawnmower…

Johnny D November 30, 2009 at 3:14 am

i have a 225 gallon tank. its 6ft x 3ft stocked with a heap of live rock and corals. i have a blue tang, harlequin, longfin banner, foxface, 4 x chromis and a pair of ocellaris. i was getting hair algae growth in the substrate around teh bombies so i thought LMB! i got 2 as i thought the tank was big enough. all good in the start. they both went to separate bombies. then they found each other … WW3 has erupted. i cant catch either so its going to be survival of the fittest for sure. any ideas anyone?

Dallas January 16, 2010 at 6:39 pm

The definition of evil lawnmower blenny is my beloved, jorje.

He brutally attacked and KILLED my baby yellow tang. I was told i got a “special case”, but reading your story I have decided blennys are the pit bulls of fish.

Keith Laflower July 9, 2010 at 10:05 am

Dude!! I just bought a 55 gallon tank about a week and a half ago, and yesterday I bought my second live rock for the aquarium. So all I thought I had in the tank was 7 blue legged hermit crabs, and 2 live rocks. But I came home from work last night, and my little brother comes and gets me and says, “You have a fish in your tank!” As far as I know there’s only hermit crabs in there…. but sure enough, there was a lawnmower blenny poking his head out from a hole in the rock. I guess it’s like his little cave lol. I’m suprised he lived from the pet store to the aquarium and is still alive. The only thing that is worrying me is that he won’t come out from his hiding spot, no matter how I arrange the rock or move it around for him.. Maybe he’s just shy? But I thought the were supposed to be very active fish…? Idk, I’m new with salt water fish.

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