Creatures of the Aquaponics

[Jim Hall]

I tend to spend time day and night in observing my aquaponics systems. I have found a few things at night, especially using LED lights, that I would not see during day, or at least NOTICE.
I went out to a system that I helped build tonight and because it is replenished with ag water from the West Maui Mountains, I looked to any "volunteers" in the system. I was looking primarily for crayfish and hoping some may have gotten estabished to eat the materials the worms and bacteria missed. Instead I found this big mouthed insect. It cruises the botttom and hunts down something that it rather messily devours. Any ideas what it is? To me it's a beneficial addition.

http://m?.youtube.com/watch?v=-JEGqVkiYdQ

[Charra Sweeney-Reeves]

Looks like a dragonfly nymph...says my aquatic entymology partner...It would explain the voracious appetite.

[Jim Hall]

Mahalo Charra, my son Maika in Australia just told me the same thing on Facebook. Guess I never thought much about Dragonflies beyond their flying stage.