In order to breed two axolotl, players will have to feed them both. Similar to the Minecraft polar bear mob, these little amphibious creatures can be befriended and bred with fish.
Breeding. Breeding adult axolotls requires buckets of tropical fish. This a time-consuming manual effort. Feed two axolotls to put them into love mode, after which a baby axolotl spawns. The parents have a "cooldown" period of 5 minutes in Java Edition or 1 minute in Bedrock Edition before they can be bred again.
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The exact rules for their spawning are as follows: They must spawn in a water block below Y-level 63; There must be a solid block of some sort above where it spawns; They can only spawn in pitch darkness (Light Level 0); They can only spawn within 5 blocks of a stone-type block (Stone, Deepslate, ...
Carrying Axolotls. While they can be bred in any body of water under the right conditions, it’s much safer for players to do so while on the surface or in their own home base. Players can carry many axolotls at once provided they have the means to do so: a bucket filled with water, with one axolotl per bucket. These amphibious creatures can’t last long without water, so prepare several buckets before searching for them.
However, like a fish, it will not survive forever outside of water. You will need to relocate the axolotl into a nearby water source to keep it alive. Once you find the perfect place to relocate your newly found axolotls, you can use buckets of tropical fish to breed them. You will need at least two adult axolotls to breed. If successful, red hearts will appear above the heads of the axolotls after giving them the fish, and they will spawn a new baby axolotl.
Minecraft axolotls may be cute, but they can be a pain to find, let alone tame and breed. While other animals in Minecraft are plentiful, like cows and pigs, axolotls can only be found in one specific biome, and a somewhat rare one at that. At the time of writing, Minecraft axolotls can only be found in the experimental snapshot (Java) or latest beta (Bedrock) versions of the game though, so make sure you're not playing on the main release.
How to breed axolotl in Minecraft. Axolotls can be bred using buckets of tropical fish. Once you have two adult axolotls together, feed each using the tropical fish and you should see red hearts ...
Axolotls are aquatic mobs, so you should look for them near water. You can find axolotls in underwater caves on a stone type block with base_stone_overworld tag, which can be: Tuff, Deepslate, Stone, Granite, Diorite, Andesite. You can also try to spawn them in creative mode using Spawn Egg and Axolotl Bucket.