hi i just bought some juvie glass cat fish. and b4 i did i did some researching and a relly good site sed they should go with guppys neons and harlequins, and since thats wat i had that is where they are now. in my 15 gal. but my question is. should i put them in my 27 gal with gouramis, angels, silver sharks and clown loaches plus a couple of mollys. so which tank should they do best in?