Im paraphrasing here but he said something along the lines of "you could get a couple of cheap fish to start the process, something that's hardy, so they can handle the changes in the water, but more sacrificial in case they don't make it, you didn't spend much."
Yeah, i feel like kind of an ******* for buying them, but I'm going to claim naivety here...plus, the ones that died got attacked and stressed to death by the lone survivor. He seems to be healthy, and happy by himself. So if he is alive, i can only imagine it isn't my cycling water that killed the other 2, especially aftwr watching him chase and nip them constantly.