Up on Lake Mohave its been Largemouth and Smallmouth Bass which seem to be in pre spawn.  For you catch and release anglers be careful when handling these fish.  Try not to press the mid section so as not to squeeze out anything like the eggs of the female.  Maybe just lay the fish on a measuring board take the photo and gently put the fish back in the area where it was caught.  No word on the striper bite from the lake as of yet.