Maybe they do in the lake. I had also heard this and asked somebody who had a breeding pair in the beginning of the year about their condition.It takes them about 3 years to reach max size (3 ft long) so a pool or1000 tank is probably minimum.
And similar to the life cycle of salmon, at maturity they spawn, and after raising fry, usually die
This may be true, the effort to protect fry in the lake prevents the parents from eating, leading loss of robustness, and to their death, but in aquariums that is almost never the case.Maybe they do in the lake. I had also heard this and asked somebody who had a breeding pair in the beginning of the year about their condition.
They are still totally healthy and eating good.