Spawn sizes vary greatly depending upon the strategy being used. The highest yield comes from the sled to pit method of rearing the fry. After that is the sled to mouth, then immovable site to mouth. The lowest yields come from the bare tank spawnings. The fry grow quickly up to about 2 cm, and then slow down quite a bit.
Water quality becomes an issue if the fry are reared in to crowded a space.
If water quality is not maintained, deformed gill covers and a stunted body shape are the fist indicators that there is a problem. First food should be live baby brine or microworms, followed shortly thereafter by crushed flake and shave frozen foods. The juvenile usually reach the 2 cm stage in three months or so, but take the rest of a year to get up to 5 cm. At this length sexual differences begin to show clearly, and they will begin to spawn in the near future. It would be interesting to see if they will practice any sort of harem polygamy along with their already diverse repertoire of spawning methods.