Australian Desert Goby Fry?

chunkswrestles

AC Members
Dec 30, 2008
146
0
0
Maryland
so i have these desert goby fry that are a couple of months old now and it seems like they are all males. i have around 40-50 fry and they all have the black spot on the first dorsal fin meaning that they are a male. how is it possible that i have all males.
 
How big are they? I had australian desert gobies, they were adults (or subadults at least) and the male and female looked significantly different, definitely more than having or not having a black dot.

ETA: Can't get to my pics right now, but these are more or less what mine looked like:

Female:
C.%20eremius-%20female_big.jpg


Male:
C.eremius%20-male%201_big.jpg


Also- planning on selling the fry? I might be interested.
 
I would have to say that they are most probably like cichlids, look the same till the female and male mature then the colouration changes.
 
From what I've read they aren't very clearly dimorphic until the male assumes the breeding dress. At that time his head becomes larger, his body becomes that bright yellow, and his fins take on their vibrant coloration. If the gobies aren't mature yet I wouldn't try too hard to sex them.
 
AquariaCentral.com