Am very impressed with this forum - but as a real bona fide newbie who just loves all these splendid little catfish - I am struggling with these mysterious L numbers. They remind me of that old joke about the Comedians Club when the old stagers just yelled out the number of a joke and everyone (the insiders) fell about in hysterics.I grasp the theory but WHERE on earth does one start to find out in simple terms WHAT these catfish are. I have several little plecs but they have been described as "Tiger Plecs" -"Clown Plecs" "Gold Clown Plecs"etc etc and match up to many different "L" numbers. With the deepest respect where can I find out what is going on with the naming. What book or site would you grizzled old veterans recommend ? Also the pictures for each number seem to be different, is there a lot of variety in coloration ?