I have cycled a 20 gallon tank for a pair of kribensis that have been breeding in my 46 gallon tank the past 2 months. The fry never make past a few days. My question is when I put the kribensis in the 20 should I put dither fish in with them or leave them alone? If I use dither what would be the safest fish that would not eat the fry, zebras, cherry barbs, something else?