i will be downsizing and wont have room for this clam.last i measured it was 9.5" long 4" wide 4.5" tall . the pic does not do it justice. it is under 12000k MH no antinics. this thing will glow under antinic bulbs! clams this size go for 200.00 ++ i am looking to trade for two smaller clams. or no less then ten small coral frags of any kind must be different. i would prefer local exchange but am willing to discuss shipping.