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Adding more fish to a 10G tank?

1K views 5 replies 3 participants last post by  Asclepius 
#1 ·
I have a 10G tank that already has three mollies. I've had them for about 2 months.
I know a person who's pufferfish recently died so they're giving away their tank and fish. I would have wanted to take the tank (since it's about 50 gallons) but it's already being given away. So I asked if I could take a few zebra fish and some snails that she had.
So would 2 or 3 zebra fish be okay with the mollies? Or would it be too crammed?
 
#2 · (Edited)
Mollies actually shouldn't be in tanks smaller than 20 gallons unless temporary placing for a few weeks.

Mollies prefer hard water(danios can handle it to 20dgh or so), but they cannot tolerate the temperature mollies require which should never be below 78, while danios prefer 72-75(below 77 you open mollies up to serious issues like fungal infections, slow metabolism putting their digestion out of whack, and lowering their immune system etc) and prefer less flow, which will be bad in a tank already too small for the species you have. Mollies also prefer brackish water(it's not a MUST HAVE, but very much preferred and healthier), while danios are full freshwater. Also all nippy and both species prefer groups of four or more, which your tank can't handle.

A great many people think their fish are "Fine, happy, had no problems" in less than ideal conditions, but they can't speak, and as prey animals hide pain and suffering until they can't. So if this tank is seriously planted and well cared for, your mollies alone may be "OK" but I wouldn't add anything else there.
 
#4 ·
Focus on getting the bigger tank before worrying about what to introduce. You never know what the future may hold, where you may be unable financially support a larger tank.
Don't count your chicken before they hatch. ;-)
 
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