They are all pen names created by best-selling or critically acclaimed authors. Few people have ever heard of Charles Dodgson's scholarly works on such arcane topics as croquet, but almost everyone has enjoyed Lewis Carroll's Alice in Wonderland. Pen names have been used throughout the ages by authors who either seek anonymity or a more 'marketable' presence. Only you can decide if a pseudonym is the proper route to go with your first publications, but here are some pros and cons to adopting a pen name you should consider first.
Pseudonyms can increase an author's overall marketability.
Not that there is anything intrinsically wrong with the Fishbinder name, but in a promotional sense you need to hook your readers from the beginning. As a marketing tool, a good pseudonym can boost sales and create enough positive buzz to give your 'name' some strong selling power. A poorly chosen pseudonym can hurt your chances of acceptance. As a beginning writer, you have very little leverage with publishers as it is, so you may not want to muddy the waters further by using a pretentious or gimmicky pen name. Insisting on a blatantly obvious pseudonym may make you a one or two hit wonder, but won't give you staying power.