Can it be? I've been googling it and I haven't come across a definite answer. I started a bucket a couple weeks ago, threw some leaves and dirt in there and discovered a big batch of larvae on monday. I've been feeding my 2 guys nothing but larvae the entire week. My betta red is no stranger to bloat. Often times when I give him his normal 2 hikari baby pellets or a fragment of a freeze-dried bloodworm and he blows up like a balloon, but I can feed him 8-10 mosquitio larvae a day(4-5 twice a day) with 0 problems, not even a round belly.