sexing

I'm able to tell the difference between full grown male and female GBRs but how does one tell the difference between juvenile GBRs? Many haven't developed the features that full grown specimens exhibit.

Hey Guys!   I was wondering for any help sexing this Red Wag Platy. Its fin is wider than other males but sharper than other females. Any help? Thanks in advance!

Hello I have a 4 year old Jack dempsey currently residing in a 45 gallon corner tank, but I have yet to decide weather its a male or female, please help!

I think I sexed them correct but not sure.  Are they both female ?

Hi I've just bought 2 bolivian rams at the weekend. I have tried to get one male and one female but as I'm sure some of you know, it's not all that easy. Here is a pic. The best pic I've managed to get tonight that shows them reasonably close and you can see their vents. I will try for more...

Hi,

hello, im ali new in this forum and fishkeeping !!!     I WANNA CHECK IF THESE FISHES OF MINE MALE OR FEMALE ?>   THERE IS 1 BLUE AND OTHER 1 IS LIKE DARK BLUE FROM TOP TOTAL 2 FISHES    ....i know these fishes are actually dyed fishes this is not there real color blah blah...   go ahead   p.s...

Recently i brought a pair of Blue rams from a guy down at my local pet shop who was convinced they where male and female. opon getting them home and in my tank after a few days i managed to convince myself maybe he was wrong after doing the research i know for shore i have one male but am not so...

So, I have 5 German Blues. I'm not sure whether they're male or female. I've read all of the signs for them being each sex, but all of my rams have traits on each side. One with a high spiked dorsal, but it also has black on its pelvic fin, and small amounts of blue on the outside of its black...

This was the first ram I purchased from my LFS. They told me it was most likely a female. After purchasing two more females and a male(or what I thought was a male), this 'female' changed completely. Colors in the face and fins turned orange, etc. Does it look like a male? The dorsal fin...

I have a large well planted female betta sorrority tank. I have only lost 2 females,one no idea the other got egg bound, until last night. My oldest female ripped the face off another girl who sadly did shortly after. She has always been aggressive and may have killed the female Iwho I thought...