Hello all.... So im a total rookie when it comes to aquariums. My wife qnd i decided on a 2.5 gallon starter kit for our two year old daughter to enjoy and help out with. We started with a fancy fan tailed guppy, cory cat, and bright pink glowfish. The glow fish is seriously agressive. Its crazy!!! Ate the tail and fins off of the guppy and moved on to feeding on the skin and flesh betwen the cory's eyes and ontop of its head....sadly resulting in the death of both. All the fish were well fed, but we noticed the glowfish was putting on girth really fast and began acting really rabid. Thought maybe it was gravid with eggs butt...who knows...anybody ever heard of or seen behavior like rhis? Shes all alone now so no more fish to prey on!!!