How can you get more shells on insaniquarium?

Answer 1

Buy more guppies and feed it nicely until it grows up and buy the guppy-eater which costs 100 shells. Use pets: Prego, Seahorse and Snail. Prego gives birth to new guppy and guppy-eater will eat it (Don't care if guppy-eater turns green, sometimes it'll not die yet.) Seahorse feeds your fish, and Snail collects shells. So don't care about'em. If you can use 4 pets, you can use skeleton fish or the clam.