Colors and temperament and pointy fins can be clues, but you can't tell absolutely unless you vent (the pictures you object to) or see the fish holding. To hold the fish, wet your hands, net the fish, and dump the fish from the net into your wet hand. Or if you are squeamish, just nudge the fish around within the net. Venting may not work until the fish is mature however.
i got batteries for my camera. i know some of the pictures did not come out very well, but if anyone wants to take a stab at gender, be my guest
Also if anyone could ID that lest picture that would be good. It mostly looked brown in the past with yellow tipped fins but lately it had been lightening up a lot and showing more bars as it gets bigger
1.) could be either
2.) Kenyi... with female colors but could be male who hasn't colored yet
3.) can't tell... but looks way too fat or dealing with bloat... be careful
4.) I would guess male by the seemingly long pelvic fins
5.) can't tell
6.) can't be sure on any of them... most of them seem to young to tell...
7.) ditto... fat yellow lab... or might just be the picture... but be careful not to overfeed
8.) can't tell
10.) can't tell
11.) looks like a female now... but that could change in a month or two
12.) can't tell
gotta vent if you need to know for sure... behavior is a good tell as well.
i know...i have problems with overfeeding. trying to work on that one. all my fish end up really fat. doesn't matter what kind it is. REALLY trying to work on that one. i have started feeding them less in the past few weeks. how much should i be feeding them?