Perculas are more aggressive than Ocellaris. As for Percs harder to get to eat , not really , they tend to take a little longer to get used to the new surroundings . As for percs hosting faster or to anything and Ocellaris not doing so , fish have personalities like people do each are different and a lot depends how long they sit in the LFS . There is no promise that a clown will host, some do quickly and some never do . The only thing a clown benefits from an anemone is a safe place to go and a nice bed . The anemone is the one that will be more happy with the presence of a clown .