I have had a school of 13 of these wonderful barbs in my 250 gal. They are great, very active and the colors are amazing , especially the males in breeding mode. There is a pecking order in a school this big with a dominant male and sub dominant on down. You can always tell the dominant male because he will have the longest filaments off the dorsal. The shorter those filaments, the lower on the pecking order. In breeding mode, teh males get a dark emerald green top with a band of yellow on the lateral line, the bottom jaw and throat area will turn bright red and the "salt dusting" on the snout. They do get big, ranging from 5"-7". Mine are 7 years old now and starting to slow down. I have lost 5 in the last two years from age :-( and I am sure the rest will go pretty soon at this point. They breed about 3x a year or with a heavy water change. I am starting to collect the young as replacements when they age out.