I know that fish have gravid spots if theyre females and a long anal fin if it's male, but when fry are so, so young I cant see a long anal fin OR a gravid spot. I can start seeing gravid spots at a month old, and even then i see no long anal fins on the males (but I know by then because their siblings already have them) So how can I tell when theyre really little and only a few hours old?
2007-06-18 19:50:12 · 6 answers · asked by Morgan 2 in Pets ➔ Fish
you cant until its 3 months old.
2007-06-19 10:03:25 · answer #1 · answered by tylerblount 2 · 0⤊ 0⤋
There is no way of telling when they are only a few hours old, and the gravid spot on females you only see anyway when they are pregnant not before
You can usually determine there gender when they are about 2-3 weeks (I currently have guppy fry, and they're now about 5 weeks old)
Here is also a site that explains the anatomy a bit better
http://images.search.yahoo.com/search/images/view?back=http%3A%2F%2Fimages.search.yahoo.com%2Fsearch%2Fimages%3F_adv_prop%3Dimage%26fr%3Dks-ques%26va%3Dfemale%2Bguppies%26sz%3Dall&w=631&h=452&imgurl=zoology.okstate.edu%2Fzoo_lrc%2Fbiol1114%2Fpre-labs%2Fguppies%2Fimages%2Fmale%2Bfemale2.jpg&rurl=http%3A%2F%2Fzoology.okstate.edu%2Fzoo_lrc%2Fbiol1114%2Fpre-labs%2Fguppies&size=31.1kB&name=male%2Bfemale2.jpg&p=female+guppies&type=jpeg&no=2&tt=226&oid=f0d6bdc6bd9cd46a&ei=ISO-8859-1
Good luck
2007-06-19 03:06:11 · answer #2 · answered by Kribensis lover 7 · 0⤊ 0⤋
When there only a few hours old you can't your going to have to wait untill they get Some carateristics.
2007-06-19 02:54:30 · answer #3 · answered by hollya707 4 · 0⤊ 0⤋
You really can't. until you can see the fins better, theyre all the same.
2007-06-19 02:54:40 · answer #4 · answered by ? 6 · 0⤊ 0⤋
No and I've tried.
2007-06-19 05:45:42 · answer #5 · answered by lilith 7 · 0⤊ 0⤋
you cant
2007-06-19 02:57:00 · answer #6 · answered by faithie 2 · 0⤊ 0⤋