Thats the thing about Fish... it's a good deal if you think it is... they are worth only the value that you put on owning them. They go for half that around here though.
Your going to need to upgrade the size of that indoor pond with the fish you have listed. Becarefull as you might find yourself addicted to Big Cats... like some of us here... *ahem* I have 9 able to grow 4' + *Ahem*