Unless your loaches are over 10 years old do not assume they are full grown. Loaches can take years to grow out fully. The burmese loach grows to 4-5" on average which means it can grow larger than this as well. Zebra loaches grow 3-4" on average. Loaches should be kept in groups of their own kind as well. It may best to return some of them and keep a larger group of one species. As far as schooling fish go you really do not have enough room to add the numer of fish to need to "school".christie71 said:No offense fish catch22 but looking at you profile you have a 10 gal tank with no loaches. The burmese can grow up to 4 inches, the zebra a top of 3 and kulli's are full grown. I am interested in schooling fish and you yourself sugg harlequin rasboras. I do not understand why you need to banter with some one who is like you offering a IMO sugg. I do appreciate your advice but would appreciate others as well. Thanks