Male Guppy

[MarissaRenee]

hi, im looking for some help. My male guppy keeps getting black spots that u can see on both sides that appear and disappear. I am certain that it is a male cause i selected from the male tank at petco.. any ideas?? oh the black spot is near the butt area

thanks
marissa

 

[WILDER]

How many gallon or litres is the tank.
How many fish and which type.
Water stats in ammonia, nitrite, nitrate, and ph.
Do you have any snails in the tank.

 

[Colin_T]

just because a fish came out of a tank with a male sign on, doesn't mean it's a male. Can you post a pic of the fish and we will tell you if it's a boy or girl?
Females produce a dark coloured patch behind their belly when they are carrying young.

 

[g_man]

i've experienced this too, actually it just happened and its the strangest thing. one minute i noticed a dot a bit above where it the gravid spot would be on a female, it seemed to go through to the other side but was only visible when veiwing him from the side, i know he's male because he has a anal fin and chases the females around. a minute later it was much lighter, and now its gone, he seems fine and i'm more curious than concerned, but will update you if i notice anything else