Boredom!!! Nah, I have been studying animals since I was a little kid. It is not a profession just yet. I am in the Air Force for now, but I am studying for a degree in freshwater biology. I have stacks of books on different animals at home. I probably have about 30-40 books on nothing but catfish. Plus everytime I see a post about a new catfish I will spend hours researching it and learning everything that I can about it! I don't just study what aqaurists know, I go to fishing sites, anatomy sites, ect. I am very interested in fish anatomy, and can probably name every bone in a fish' skull. I know there are members on here that are probably more knowledgable than I am so I invite them to add or correct anything that I write about. I don't give a set size for adult fish because it is really more a range of sizes as in most animals. You never know you might get a dwarf rtc and it will only grow 2ft in it's entire lifespan. You prepare for the largest possible, but you never really can know just how big your fish will get. This of course is with larger fish, but in smaller fish you can pretty much say that said guppy will only get a max of 3 inches, and you'd be amazed to ever see one reach 4 inches. Think of that in terms of feet for large catfish. Ugh, you guys got me rambling again. LOL, I can't wait to do some more profiles. It helps me to learn more! Let's all become experts together so that we can learn from each other!