I just found something very important to recognize, while listening to the audio version of "Journey's Out of the Body" by Robert Monroe.
I had read and have been studying the codex, "The Paraphrase of Shem", from the gnostic "Nag Hammadi Library", book. There was this part in it that I could not understand, about the "fish"... and just now, it all came together for me while listening to this audio book. Here, I'll share what I've found. Ok. First read the excerpt from "The Paraphrase of Shem":
---- "And my garment of fire, according to the will of the Majesty, went down to what is strong, and to the unclean part of Nature which (the) power of darkness was covering. And my garment rubbed Nature in her covering. And her unclean femininity was strong. And the wrathful womb came up and made the mind dry, resembling a fish which has a drop of fire and a power of fire. And when Nature had cast off the mind, she was troubled and she wept. When she was hurt, and in her tears, she cast off the power of the Spirit (and) remained, as I. I put on the light of the Spirit and I rested with my garment, on account of the sight of the fish.
"And in order that the deeds of Nature might be condemned, since she is blind, manifold animals came out of her, in accordance with the number of the fleeting winds. All of them came into being in Hades searching for the light of the mind which took shape. They were not able to stand up against it. I rejoiced over their ignorance. They found me, the son of the Majesty, in front of the womb which has many forms. I put on the beast, and laid before her a great request..."----
Alright, now, when you listen to what Robert Monroe talks about in this book, it sounds so similar to what this excerpt said. For example, he was saying that two predator leech type fish came and were sucking on his ethereal body (he was out of his physical body), and that when he moved or fought back, then a whole bunch of them came around and attacked him too. But when he stopped moving, they went away. Well, it says in that excerpt that he rested with his Spirit garment that he had put on after the dark Nature had thrown it off (because it doesn't belong to her), and he rested, on account of the fish. Which sounds to me like the same thing Robert Monroe did in order to not attract them to him.
At 5:15:06 he talks about those predator fish:
He talks about those fish earlier in the book, as well.
Also, there's that part just before this one, at around 5:14:00 where he talks about the fire. That he used fire on those strange rubbery creatures that were more animal than boy or human, and that when he used the two wires of electricity on the part of the creature when he pulled it off his body, then it turned into a bat like creature and flew out his window! The fire, the air (the bat)... similar. The electricity worked against it though.
Maybe something to do with the masculine aspect, because the feminine represents magnetism.
Here's the link to The Paraphrase of Shem: http://www.gnosis.org/naghamm/para_shem.html