Thank you all. After I had a lead to follow I did some google research and yep, dragonfly nymphs. I'm gonna keep them in a 2.5 gallon. I see that they can stay in this larval stage for up to 4 years! I'm gonna raise them, keep them in this stage for awhile, then give them some leaves to crawl out of the water where they can metamorphise and become crazy winged creatures lol.
