Honestly I don't see why so many people are against crickets. Only their heads and legs are hard. The legs are easy to pinch off. If you can feed a Tiger Salamander crickets without harm there is no reason a Axolotl couldn't eat them. In the wild Axolotls are not eating huge amounts of earthworms like they do in captivity. Earthworms enter streams and other bodies of water after heavy rains. They don't live in water and are only there by accident. So what is left for Axolotls to eat the rest of the time? Water insects like water boatman, drangonfly larvae, aquatic isopods and land insects that fall ino the water. All of these have much harder shells than soft bodied crickets. Axolotls also would eat small native fish. These have hard heads compared to crickets. Now what is wrong with crickets you might ask. Well I'll tell you. Unless they are gutloaded they are useless. Cricket nutritional value comes from what they eat. I feed mine scambled eggs with crushed bee pollen, blue green algae, and rep cal mix. I also feed crickets kale and collard greens which are loaded with vitamins. I feed my Axies crickets a couple times a month and have never had any problems. A gutloaded criket is a great wat to get vitamins and calcium into your Axie. I also didn't start feeding them crickets until they reached 5 inches. I feed my Axies a mixed diet of chopped earth worms, gutloaded crickets, little balls of black worms ,very thin strips of raw catfish meat and pellets. I also use fish eggs I get from catfish I catch during their spring spawn. A mixed and varied diet is the 3rd most important thing for your axie, right after water quality and NO GRAVEL