I've had mine for less than 24 hours, and I've noticed he likes to curl himself around the heater. It scared the living snot out of me, because I thought one of his fins might have been stuck on it. Turns out not, but I still nearly had a heart attack.
30 US Gallon Tank: 3 Goldfish (1 White Ryukin "Salt", 1 Bronze Oranda "Pyropus", 1 Silver Oranda "Argentum")
10 US Gallon Tank: Borealis the Betta, Assassin Snail, Various numbers of Pond Snails
4 Cats (Fenris, Tatum, 'Spoo and Samantha)
Part-Time University Student
Part-Time Hospital Employee
Not enough time in the day...