Ensure their tank is large enough so that each molly has room to swim comfortably. A good starting size for a small group of mollies is around 20 gallons. The tank should have a filter to maintain good water quality and a heater to keep the temperature stable. A heater is a must-have...
Guppy fry are free to swim from the outset. The first thing they do after birth is look for a place to hide. They are misshapen at first, but after a few hours, their bodies straighten and grow strong enough to begin eating. Guppy fry are tiny, measuring around 1/4 inch in length....