i have a 20 gallon tank, cycled it and i made my LFS do the water test and they said it was okay. Now, i have 3 small 3'' (not including fins) angelfishes and a 3'' pleco. After a week i bought 5 harlequin rasboras, 6 guppies (2 male, 4 female) acclimated them (except the guppies) into my aquarium and i also put in a cupful of stability. after it i quarantined the guppies into my 3 gallon cycled tank for one day (to make it sure);D and waited for the results the other day. and figured to transfer it into my 20 gallon after i buy the tank in my LFS. can anyone tell me if 3 3'' angelfishes, pleco, two amano shrimps, 6 guppies and 5 harlequin rasboras are overstocked in a 20 gallon?? ???