mortality rate on baby fish is high. thinbars tend to do better in slightly brackish water, warm around 80ish, and lots of aeration with plenty of food. they like to eat at night or in the dark. but even then, it doesn't mean they will survive. of all the thnbars i kept, only one grew to about 6inches, the rest died also. mysterious death, eating one day, dead the next. but the rest of the tank mates are fine, i.e., widebars, p bass, clown knives...just probably hard to keep when they little.. sorry to derail...free bump 