Very interesting. My tang was first in a 30 gallon for just a few month, then a 240 for 18 years, and the last 2.5 years in a 300 gallon. The clown was in my first saltwater reef tank, a 20 gallon hex for a few years, before joining the sailfin tang in the 240 and then my 300.Thank you both! Fish can be aged by the rings on thier ear bones similar to aging trees by their rings. How often a ring is deposited varies from species to species. Tang species have average maximums of 35 - 40 years. I've had dwarf angels outlive their counterparts, about 10 years, so hopefully these guys/girls will be around a while longer. Clowns have a max recorded wild expectancy of 28 years so it's good to hear yours are still going strong.
a black clown is about 23 years old and still spawns every 2 weeks or so. . .
. . . Clowns have a max recorded wild expectancy of 28 years . . .
My clown is still spawning regularly and the sailfin tang is doing great as well.