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You are here: myPetSmart.com > Pet Care Library > Ask An Expert > Answered Questions > I Have 2 Mollies 5 Goldfish 1 Male Betta Can I Put Them All

i have 2 mollies 5 goldfish 1 male betta can i put them all together in my 10 ga...

d.conde

Question: 
i have 2 mollies 5 goldfish 1 male betta can i put them all together in my 10 galoon tank
Answer: 

The general rule is one inch of fish body length per gallon of water.
The problem with mollies, platys, and guppies is that they breed readily, and if producing babies they will soon overcrowd the tank. If your mollies are all the same gender, you will probably be okay with them, but if not they will breed, and then you are going to need a bigger tank. That is part of the fun of fish keeping, however, as one tank often grows into keeping two or more - usually subsequently bigger ones!