actually the jewel is a survivor of what my kids call the deadly waters. wheni first stocked my tank i stocked it with about 8 fish, well that was before i had ever heard of a thing called drip acclimation and needless to say all but two died immediately. the jewel and the larger female auratus. well she beat the little guy up pretty bad and he just sat at the bottom of the tank forever. i figured it wouldnt be long before he passed away. As i added a few fish a week at a time the auratus lost interest in the jewel and he started to come back slowly. so now 4 months later he is very strong and has the heart of a lion.pretty much any fish that goes near the back of the tank is quickly nipped and goes running away. he will even dart to the front to attack if he thinks they are not looking. he is pretty high on the pecking list from what i can see, maybe top 4 or higher. i was told that he probably doesnt belong in there but there is noway im removing him now, i think he earned his spot and is clearly in no danger. so i guess its up to you, having him already in there before i added most of the fish probably helped him out.