i name ALL of my fish. it makes communicating w/ my girlfriend easier. instead of saying (purely an example) one of the albino cories seams to be acting weird and has a red mark on its side can you have a look? it would be easier to say that pierre (he looks french) is acting funny and has a red mark on his side can you have a look? since i can tell the difference of each of these cories (they all are slightly different) i will look at pierre instead of having to check out all of them and wasteing what might be valuble time. now if i notice it on another i will further investigate the problem.