Avatar or Expansion of Krishna: Kshirodakashayi Vishnu

                                                                  Q. Does Ksriyodakashayi Vishnu also have a spiritual body? Does He exist in Lord Brahma also?

                                                                  A. Yes. He enters as the Supersoul within the heart of every embodied living entity, including Brahmaji and is unaffected by material nature.

                                                                  Q: Generally people know about Vishnu or Kshirodakasayi Vishnu. The general public has not heard about other Vishnu forms- Karanodayakasayi Visnu, Garbhodaka sayi Vishnu etc. and other expansions of Krishna: Immediate expansion as Balarama and subsequent expansions. Where in this information in sastras is available?
                                                                    We would like to know more about these details of different forms of Krishna's expansions and about Universal egg.
                                                                    
                                                                   

                                                                  Q: In the Introduction of the Krsna book (paragraphs 3 and 4), the following is stated. (Ellipsis are mine):
                                                                   "... when the Lord descends, the incarnation emanates from Viṣṇu. ... when Kṛṣṇa appears, all the Viṣṇu expansions join with Him. ... Kṛṣṇa actually appears in order to demonstrate His Vṛndavana pastimes and in this way attract the fortunate conditioned souls and invite them back home, back to Godhead. The killing of the demons in Vṛndavana was carried out only by the Viṣṇu portion of Kṛsna."