Pet Information > ASK Experts > Pet Fish > Freshwater Aquarium > black eyed mollys

black eyed mollys

23 16:10:12

Question
do black eyed Mollies have to have a big tank?

Answer
Hi Kasey
Depending on the type of molly(black eye is a color variation, I'm talking if it's a ballon, lyre tail, etc.)they can grow to about 2-3 inches.  So, you could safely keep about 3-5 in a 10 gallon tank.  Obviously the larger the tank the better.  They are an active fish, I wouldn't recommend anything less then a 10 gallon.  And, then there's also the "fry factor"....females will have lots of fry/babies, and very quickly overrun a tank.  

Good luck!

Christy