jumping

I quickly went from having a reasonable load in a 55g and having a month or so to upgrade to "good lord I need to upgrade yesterday" when my friends decided to surprise me with some fish a few days after seeing my tank and showing photos of my intended stock. Apparently, "hey, look at the cool...

Recently I stocked my 240L with two fire and ice snakeheads... i knew they were jumpers when i got them but one of my new guys just loves to ride the bubbles from the airstone and jump into the lid! So the question or thing im wondering is should i be concerned that hes gonna cause himself some...