What limits me..?? Let me list the reasons
1) My "zoo" consists of a 4yrold and 8yr old human, a 9yr old blue pitbull, a bearded dragon in her 40 gallon terrarium( and her 7 different live foods that I have to care for!), a 10g with 2 guppy's and 3 African dwarf frogs, my daughters 4g with her marble HM male betta, and my 5g with the new guy a CT male Betta.
2) well hell ...SPACE!.. refer to #1 and you'll understand
3) I work full time and a single mother with 100% custody so time is an issue for giving all my zoo member proper care.
4) I love going away on vacation often and it's hell getting someone to come over and give proper care to the aquatic ones( and sometimes the kids as well when adult vacation). I have a constant option for the dragon and the dog but the rest of my zoo not so much
Howeevveer... If another healthy Marble Betta shows up at Petco(they didn't know what they had!...well neither did I lol) I can't say my will is that strong