It does look and sound very confusing. none the less whenever i buy a new fish i like to study and learn as much as possible about them. call me fanatic but on each of my tanks is an index card that has each fishes classification, species, common name, and the name we have given to each fish. along with that i also have a note pad where i record all other information such as date of purchase, health issues and dates and all transfers from tank to tank including in and out dates from my hospital/quarantinment tank and treatments given while there. i don't know if this would be considered overboard or not but since i would like, some day, to start a business that specializes in all areas of aquaria from sales and set up to maintnance and other services, the more i know about it, the better. as soon as i can i will post pics of my plecos including my most recent purchase of an albino chocolate pleco.