Quote Originally Posted by EyeSpy View Post
I talked to some buddies today who said there was ice as far as you could see out west today. That ice isn't going to disappear overnight. I have also heard the fish don't start spawning until the water is just above 40 degrees, but I am not so sure I agree with that. How much different is a fish from other animals? I am by no means a fish biologist but I have to believe that a female's body tells her when to drop her eggs no matter if the water temp is 38 or 42 degrees. Those eggs can only be inside of her for so long. I am wondering if the eggs are dropped in colder than normal water, will they have a less chance of survival? My prediction is it will either be a banner hatch or it will almost be non existant.
Optimal water temps for spawning are low 40s but they are also known to spawn under the ice in Canadian lakes. Longer days and full moon may have as much to do with the spawn as water temps do. Colder water means a longer incubation period until hatching. Colder water also means the gobies are not as active and do not consume as many eggs as they would if the water were warmer. I think the females spawn when they are ripe and do not or cannot hold them for warmer water. The problem cold water presents is there may not be enough zoo plankton to feed the larvae walleye once hatched.