i would advise you to remove her from the tank after she has given birth. In the wild, the fry would move into very shallow water where the adult mollies (and any predatory fishes) cannot go, so the females have never evolved any 'maternal behaviour' towards their offspring; as far as the female mollies are concerned, a baby molly is just a meal. Mollies can easily breed in any conditions, but the babies need plenty of hiding space if they are to be raised with their parents. Healthy adult mollies can give birth to as many as 100 babies at one time! Even their own mother can eat babies, so they need much care in order to survive. A teaspoon of aquarium salt per 5 gallons of water will go a long way in helping them. And if you’re wondering how big do molly fish get, the answer is: up to 4.5-inches. Sometimes, even the mothers will eat their own fry. Updated May 14, 2020 Author: Mike - FishLore Admin Social Media: The Molly is a tropical fish that prefers some salt in their water. Mollies do best at a neutral to slighly alkaline pH and a water temperature of 77-83°F (25-28°C). Mollies don’t have any parenting habits so parent molly does not protect their Fry Mollies. You should try to include some plant matter into their diet. While molly babies are so tiny, their parents can eat them. The genus Mollienesia , from which the name mollie was derived, has been re-classified as Poecilia and is considered to be in the same genus as the guppy. So, if you want to breed balloon mollies, it is a good idea to have a lot live plants in your aquarium, where baby mollies can hide, or you can separate the pregnant balloon molly from the tank. Black mollies are a color morph, and unfortunately they tend to be badly inbred these days. Mollies … You may also see them in saltwater tanks from time to time. Females are larger than males and fairly easy to identify, especially because of that near-constant pregnancy. Mollies, like guppies, are capable of acclimating to full strength sea water temporarily, but it is not their natural environment by any means. Breeding boxes keep the female contained while the fry slips down through the bottom. I do provide plants like water sprite and duckweed, groups of caboma and such so the fry have places that they can get away from the adults. I have had many mollies that did not eat their young. Molly fish are livebearers and the females seem to almost always be pregnant, thanks to the voracious Molly fish breeding behavior. Molly Fish Care. Mollies don’t display any parental instincts, and most will attempt to eat the babies. Because of their inbreeding, they are susceptible to illness, and aren’t as hardy as they used to be. As readilly as mollies breed, it isn't always a bad thing to loose a few to parental consumption. My babies usually hide out in the back of the tank and hide in the gravel and other plants. They eat the tiny bits of flake food that find their way to the bottom of the tank. Here is a video of a balloon belly molly fish … They are omnivores, eating both plant and meaty foods. also try and keep some plants or hidey-holes in the birthing tank so that the fry can hide. I have a very high survival rate. i have not bred mollies, but from what i have read, if sufficient food is not provided, the mother molly might consume some of her fry, though she will probably be too tired to do anything after having given birth. They will readily eat flakes, freeze-dried, frozen, and live foods. I had one molly deliver as many as 25 babies, but most of my mama's deliver between 1-10 babies. Not every fish eats their young, but some do. When purchasing mollies, always carefully examine the tank in the fish store, and don’t purchase them if there is any trace of illness. Female mollies give birth to babies or young ones that are called so “molly fry”. Molly Reproduction.