3 of mine were bought by myself and they were les than 1 inch. I actually bought 4 but 1 died early on. The other 4 were adopted from a family member. They were housed in a 50 gallon hex for 7 years. The tank conditions were very good, but those 4 clowns were smaller than my 3 originals. They are all growing noticably now. My 2 largest are about 6 inches mabey a little more. But they are fat boys. Much broader than any of the rest. They also fight for dominance a lot. Their growth has been pretty slow and I have not had babies. From what I've read, they are difficult to breed in an aquarium. They will eat pretty much anything I throw in. I feed cucumber, flake, pellet, frozen, freeze dried, earthworms. They are pigs.