Depending upon where you live, you may find a Petco which can take donation fish, sometimes they have room and sometimes they do not.
Other local fish stores will also take some fish from you, but also may be willing to give you credit for plants, fish or food, etc. They usually have specific things they offer depending on the store.
These livebearer fish have tens and hundreds of babies because in nature most of them are food for other fish and critters in the water.
How you want to deal with babies is totally up to what you feel okay with. The mother fish will possibly eat some, but that means also she gets back nutrition from the fry. Circle of life thing. But fish food has nutrition also, so live food isn't usually necessary for the majority of community fish.
You can also keep a male, and rehome the females or the other way around. No need to euthanize him.
But livebearers also may continue to have babies for a while after the male is gone.
New to FW fish? First tank in a long time or EVER??? Need some info on keeping fish?
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