So my little sister started with 4 feeder guppies a few months a go and they've exploded in her little 10 gallon, so now I have 18 of them in my 25 gallon with my 2 females.
Well I was looking at them and some of them have little strings of poo hanging from them. Does this mean they're sick?
Is there anything I can do to help them?
I'm worried that my little sisters tank is too crowded and there might be a chance of illness in her tank. Its a heated, filtered, and lit 10 gallon with a hatchet fish, a pleco, and a lot of guppies.
They don't look sick, but what would be some signs to look for in case her guppies, or even mine, are sick?