I just need to know what the narrator was so interested in about the Axolotl's? What made him so obsessed? What did he want himself that he found in the Axolotl?
The narrator feels that he has some kind of deep connection with them. The Axotols seem to communicate with him, and he with them, at first. This is why he keeps returning to the tank to see them again and again, until the connection is lost.