Goldfish Culling - Ryukin By Don(NYGold) Hello fine members of GFK I was asked to put together a little something on culling Ryukin. Iâ€™m no expert so bare with me. I have some pictures because I think itâ€™s easier to explain than with words. Most people my self included like to have big spawns with lots of fry but after having a HUGE spawn I think I would rather have spawns on the smaller side like 200 or less. Having spawns of over 1000 fry at a time can be a real pain if you donâ€™t have the room. Here is a picture of what a spawn of close to 3000 looks like. As you can see itâ€™s very crowded and without the proper space and food these little fry will be off to a bad start. I posted this picture before and Gary told me they didnâ€™t have enough space, I gave him some BS excuse about there being enough space but Gary was right (Sorry Gary). These little guys are about 2 weeks old but you can actually cull some even sooner. Here is an over head shot of a few fry at 6 days old. At this stage from the top you can see crooked spines. I didnâ€™t have a picture of a fish with a crooked spine so I drew one I hope you get the idea. Twisted spines are probably one of the first things you can cull out aside from 3 eyes and 2 heads and stuff like that I would probably keep those any way. A 2 headed fish is probably worth a million bucks. As the fry get about 2 to 3 weeks old they start looking more like fish than alien bugs.Youâ€™ll find some with little spikes instead of dorsal fins, some that are banana shaped and some that have a butterfly like tail. Iâ€™m looking for a Ryukin that has a nice full tail that goes straight up and down after it leaves the peduncle. Here is a picture of a fry with a tail that I would cull. These pictures are both the same do you see how the top part of the tail and the back are on the same plane? When this fish is all grown the tail is going to droop off its butt, throwing of the balance and the swimming motion of the fish. The above picture is more of what Iâ€™m after. See how the tail shoots up at a nice angle after leaving the body? While this fry isnâ€™t perfect it is much better than the one in the previous picture.This tail issue alone will cut the number of your fry down well over 50%. As the fry get older it gets easier to cull basically because you can actually see the damn things.At 6 to 8 weeks you can start looking a bit closer at the fry like particularly the peduncle area.Itâ€™s a bit hard for me to explain the peduncle gets shafty looking .