By the way, I recently learned this - We are not minnows when we start out here on steemit!

Dead Fishes - those who have been inactive for more than 30 days, while inactive means didn't publish any post, didn't write any comment and didn't cast a single vote.
Red Fishes or Planktons - are those who own between 0 and 999,999 VESTS
Minnows - are those who own between 1,000,000 and 9,999,999 VESTS
Dolphins - are those who own between 10,000,000 and 99,999,999 VESTS
Orcas - are those who own between 100,000,000 and 999,999,999 VESTS
Whales - are those who own more than 1,000,000,000 VESTS

Thanks to a post by @ana-maria. Can you believe it?