Srac says roughly the same thing.
https://srac.tamu.edu/index.cfm/getFactSheet/whichfactsheet/277/"Both white and black crappie reach sexual maturity at
2 to 3 years of age. Spawning begins in late March, April,
or early May depending on geographical location. Black
crappie spawn when water temperatures warm to 60 to 64
°F (15.6 to 17.8 °C), while white crappie spawn when water
temperatures reach 65 to 70 °F (18.3 to 21.1 °C). Males
select the nest sites and clear circular beds"
