I have about 10 woodfrog tads in a 10g tank, definately not overcrowded. I am wondering why two/three of the tads are quite larger than the majority. They all get a chance to feed and I change half the water daily. Is it a hormonal/pheremonal thing? Also, while cleaning the tank, I fould one tad had been completely dissected and maybe half-eaten. I didn't know that wood frog tads were carnivorous. I am feeding them on crumbled fish flakes and boiled lettuce, and they do eat the algae I allow to grow on the tank walls. any help would be appreciated.