Mega Man X3/Volt Catfish

Going down the corridor you will be greeted first by a Trapper, a robot that shoots an oscillating laser. When you pass through, beams will be shot out dealing damage. They're invincible, so best to dash through.

Then you'll be greeted by these crab looking bots - Crablasters. They shoot twin lasers at an angle, and when hit enough, will start exploding but without dying. Keep shooting to kill them.