actually funny story, the 4" salvini was running my grow-out 60 gal and started to beat up on the johanna, 1 male and 2 female jacks, 2 severums, red tail barracuda, and even pleco. so his time came to make the move to my 135 gal with 18" aro among other cichs. thought about the possibilty, but sure enough, couple hours later . . . arowana food! it was just funny b/c i have never fed my aro live fish feeders, so i didnt think he would really think about the sal as food. . . my wife was upset, she enjoyed the sal. i was thoroughly entertained by a $8 feeder.