Chapter by Chapter: Revelation
Ch. 1 – Source of the message / Blessed are those who read & obey / Signification of the message / Shortness of the timeframe / The glorious Christ
Ch. 2 – Letters to the churches at Ephesus, Smyrna, Pergamus, & Thyatira
Ch. 3 – Letters to the churches at Sardis, Philadelphia, & Laodicaea
Ch. 4 – John summoned to heaven via a vision / Sights in heaven / Song of heaven
Ch. 5 – A sealed book / Lamentation because no one is worthy to open it / Manifestation of the Lamb, worthy to open the book / Exaltation of the Lamb
Ch. 6 – The 1st 6 seals: white horse, red horse, black horse, pale horse, martyred souls under the altar / The great day of His wrath
Ch. 7 – 144,000 sealed / An innumerable host worships God, cared for by the Lamb of God
Ch. 8 – The 7th seal opened (7 trumpets) / Silence in heaven for half an hour / The 1st 4 trumpets sound: (1) hail & fire mingled with blood – third part of trees & all green grass burned up; (2) great mountain burning with fire cast into the sea – third part of the sea becomes blood, third part of sea creatures die, third part of ships destroyed; (3) great star falls from heaven, burning as a lamp (star called Wormwood), fell upon third part of rivers & waters – waters made poison, & many men die; (4) third part of the sun, moon, & stars darkened
Ch. 9 – The 5th trumpet: bottomless pit opened & locusts / The 6th trumpet: 4 angels loosed / No repentance forthcoming
Ch. 10 – John is given a book/scroll, told to eat it (sweet in eating, but bitter in his belly)
Ch. 11 – The temple measured / The 2 witnesses / The 7th trumpet: all heaven worships God
Ch. 12 – The woman, the child, & the dragon / Satan cast out of heaven / The woman persecuted
Ch. 13 – The beast from the sea / The beast from the earth
Ch. 14 – The Lamb & the 144,000 redeemed / Proclamations of 3 angels / Reaping the earth’s harvest & reaping the grapes of wrath
Ch. 15 – Prelude to the 7 bowl judgments
Ch. 16 – The 7 bowls: (1) loathsome sores; (2) sea turned to blood; (3) waters turned to blood; (4) men are scorched; (5) darkness & pain; (6) Euphrates dried up; (7) earth utterly shaken
Ch. 17 – The great harlot & the scarlet beast / Meaning of the harlot & the beast
Ch. 18 – The fall of Babylon the great / The world mourns Babylon’s fall / The finality of Babylon’s fall
Ch. 19 – Heaven rejoices over Babylon’s fall / The triumphant Christ on a white horse / Defeat of the beast & his armies
Ch. 20 – Satan bound for 1000 years / Souls of martyred saints reign with Christ for 1000 years / Satan cast into the lake of fire & brimstone / The final judgment
Ch. 21 – New heaven & new earth / Those who will be cast into the lake of fire & brimstone / The new Jerusalem
Ch. 22 – The river of life & description of heaven / Jesus’ final invitation & warning / Benediction
Sid Williams is discussing. 
That specific number of the fish is amazing to me. A small detail that says a lot.