Trouble with Guppies
A co-worker just but a small 2 gallon tank for his daughter. They have an internal filter and no heater. They started off with two male guppies. Within one day, one of the guppies was dead. A day or two later, they introduce another male guppy. Overnight, the new guppy was dead. His water quality is good. Could there be a dominant thing going on? Is the 2 gallon tank too small for just 2 male guppies. Can someone offer some advice?