boy or girl?

Question
I have two questions, I have 4 fish i think 1 is a boy and the rest are girls
because they have spots of their tails that look almost like eggs, I was
guessing
maybe it was to attract males?  how can I tell the difference?  My second
question
is I think my fish is pregnant, because it is looking fat and is guarding this
hole
in
my tank, Is it pregnant?

Answer
Hi Kayla,
  Actually you have it backwards.  The ones with the spots on their tails that look like eggs are actually boys and they have them to attract the girls.  

  Only a few kinds of fishes (e.g., guppies, mollies and relatives plus a few others) can get pregnant and give birth to live young.  Most fishes lay eggs and so they can't get pregnant as such.  

-- Ron
  rcoleman@cichlidresearch.com
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