How can I tell if my fish is pregnant?

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bblacrosse

Aquarium Advice Regular
Joined
Dec 30, 2011
Messages
59
Location
Minnesota
Have two glofish and three mollies in a 15 gallon tank...one of the mollies, a female, and one of the glofish are looking sort of bigger. How can I tell if they are pregnant?
 
Glofish don't get pregnant. Mollies do though. The molly will gradually get larger and you can see a gravid spot (google it) usually, though if it's dark colored, it's really hard to see IME
 
thats not true.. glofish can infact get pregnant.. although the eggs they lay will most likly not survive due to them eating them or you do not have a large enough tank for them to hatch.. but they do get pregnant just like the danios they are.
 
Fish full of eggs are called Gravid.
But Pregnant means full of developing offspring.

So Glofish and other Danios may become Gravid, which is like pregnant, but they are full of eggs and lay eggs instead of live birth like Guppies.
 
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