I am lucky to live right across from a beautiful beach where I can stock up on as many creatures I can find. Not to mention an endless supply of clean sea water. I change 25% water per month (good exercise) and run with a minimum of filtration, I have a bed of mussels for that and a deep live sand bed seething with biomass for nitrate removal. Essentially I've tried to recreate 250ltrs of an actual marine ecosystem. Funny thing is that these red anenomies were the first things to go into the tank and were originally slated to be decoration, but I soon discovered that they have a will of their own. They wander around the tank (sometimes they hitch a ride on an abalone or snail) looking for the ideal feeding spot in the currents. When they are real happy there is a ring of brilliant blue spots around the mouth. I must be doing something right because they are spreading like a rash, there is at least 14 fleeing from womb in the shot below...
As for the puffer, the giant blue eyes and huge smiley mouth have me convinced she is a female. I call her Bubbles, she cheerily fluffs around the tank all day with that funny look on her face. The really amazing thing about her is that her skin changes colour! Not right away, but at night her spots are dark like cheeta spots, but during the day she turns a mostly sandy colour.
A mate and I caught her in a net one night, blew up to the size of a tennis ball!