Is it possible to add more tanks than the 2 your given ? Also is possible for the game to track what fish you have bred rather than using a spreadsheet?

You start the game with two tanks, Tank 1 and the selling tank. Both of those tanks can be used for breeding, but you have to be careful that you don't accidentally sell fish that are in the selling tank. You can purchase one additional tank, for a total of 3 tanks. There are no other tanks available in the game.

All versions of Fish Tycoon provide limited 'genealogy' information for fish that you have swimming in your tanks, but they do not provide a function for the kind of tracking that would enable you to organize your breeding efforts. That's why a lot of people have created spreadsheets and databases.

The Spoilers thread of the Fish Tycoon Guide section (at the bottom of the forums) contains a spreadsheet layout that's ready to use for such purposes, as well as a completed spreadsheet and a link to an online Fish Tycoon breeding database.

Thanks for the very quick reply, but is it possible to add these features in a patch ?

Well, technically it's possible, but I know of no plans to release such a patch. The developers do keep track of all of the suggestions made on the forums, though.

ok cool. Thanks for replying :d